4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2013, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #define DEBUG_SUBSYSTEM S_OSC
39 #include <libcfs/libcfs.h>
42 # include <liblustre.h>
45 #include <lustre_dlm.h>
46 #include <lustre_net.h>
47 #include <lustre/lustre_user.h>
48 #include <obd_cksum.h>
56 #include <lustre_ha.h>
57 #include <lprocfs_status.h>
58 #include <lustre_log.h>
59 #include <lustre_debug.h>
60 #include <lustre_param.h>
61 #include <lustre_fid.h>
62 #include "osc_internal.h"
63 #include "osc_cl_internal.h"
65 static void osc_release_ppga(struct brw_page **ppga, obd_count count);
66 static int brw_interpret(const struct lu_env *env,
67 struct ptlrpc_request *req, void *data, int rc);
68 int osc_cleanup(struct obd_device *obd);
70 /* Pack OSC object metadata for disk storage (LE byte order). */
71 static int osc_packmd(struct obd_export *exp, struct lov_mds_md **lmmp,
72 struct lov_stripe_md *lsm)
77 lmm_size = sizeof(**lmmp);
81 if (*lmmp != NULL && lsm == NULL) {
82 OBD_FREE(*lmmp, lmm_size);
85 } else if (unlikely(lsm != NULL && ostid_id(&lsm->lsm_oi) == 0)) {
90 OBD_ALLOC(*lmmp, lmm_size);
96 ostid_cpu_to_le(&lsm->lsm_oi, &(*lmmp)->lmm_oi);
101 /* Unpack OSC object metadata from disk storage (LE byte order). */
102 static int osc_unpackmd(struct obd_export *exp, struct lov_stripe_md **lsmp,
103 struct lov_mds_md *lmm, int lmm_bytes)
106 struct obd_import *imp = class_exp2cliimp(exp);
110 if (lmm_bytes < sizeof(*lmm)) {
111 CERROR("%s: lov_mds_md too small: %d, need %d\n",
112 exp->exp_obd->obd_name, lmm_bytes,
116 /* XXX LOV_MAGIC etc check? */
118 if (unlikely(ostid_id(&lmm->lmm_oi) == 0)) {
119 CERROR("%s: zero lmm_object_id: rc = %d\n",
120 exp->exp_obd->obd_name, -EINVAL);
125 lsm_size = lov_stripe_md_size(1);
129 if (*lsmp != NULL && lmm == NULL) {
130 OBD_FREE((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
131 OBD_FREE(*lsmp, lsm_size);
137 OBD_ALLOC(*lsmp, lsm_size);
138 if (unlikely(*lsmp == NULL))
140 OBD_ALLOC((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
141 if (unlikely((*lsmp)->lsm_oinfo[0] == NULL)) {
142 OBD_FREE(*lsmp, lsm_size);
145 loi_init((*lsmp)->lsm_oinfo[0]);
146 } else if (unlikely(ostid_id(&(*lsmp)->lsm_oi) == 0)) {
151 /* XXX zero *lsmp? */
152 ostid_le_to_cpu(&lmm->lmm_oi, &(*lsmp)->lsm_oi);
155 (imp->imp_connect_data.ocd_connect_flags & OBD_CONNECT_MAXBYTES))
156 (*lsmp)->lsm_maxbytes = imp->imp_connect_data.ocd_maxbytes;
158 (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES;
163 static inline void osc_pack_capa(struct ptlrpc_request *req,
164 struct ost_body *body, void *capa)
166 struct obd_capa *oc = (struct obd_capa *)capa;
167 struct lustre_capa *c;
172 c = req_capsule_client_get(&req->rq_pill, &RMF_CAPA1);
175 body->oa.o_valid |= OBD_MD_FLOSSCAPA;
176 DEBUG_CAPA(D_SEC, c, "pack");
179 static inline void osc_pack_req_body(struct ptlrpc_request *req,
180 struct obd_info *oinfo)
182 struct ost_body *body;
184 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
187 lustre_set_wire_obdo(&body->oa, oinfo->oi_oa);
188 osc_pack_capa(req, body, oinfo->oi_capa);
191 static inline void osc_set_capa_size(struct ptlrpc_request *req,
192 const struct req_msg_field *field,
196 req_capsule_set_size(&req->rq_pill, field, RCL_CLIENT, 0);
198 /* it is already calculated as sizeof struct obd_capa */
202 static int osc_getattr_interpret(const struct lu_env *env,
203 struct ptlrpc_request *req,
204 struct osc_async_args *aa, int rc)
206 struct ost_body *body;
212 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
214 CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
215 lustre_get_wire_obdo(aa->aa_oi->oi_oa, &body->oa);
217 /* This should really be sent by the OST */
218 aa->aa_oi->oi_oa->o_blksize = DT_MAX_BRW_SIZE;
219 aa->aa_oi->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
221 CDEBUG(D_INFO, "can't unpack ost_body\n");
223 aa->aa_oi->oi_oa->o_valid = 0;
226 rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
230 static int osc_getattr_async(struct obd_export *exp, struct obd_info *oinfo,
231 struct ptlrpc_request_set *set)
233 struct ptlrpc_request *req;
234 struct osc_async_args *aa;
238 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
242 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
243 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
245 ptlrpc_request_free(req);
249 osc_pack_req_body(req, oinfo);
251 ptlrpc_request_set_replen(req);
252 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_getattr_interpret;
254 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
255 aa = ptlrpc_req_async_args(req);
258 ptlrpc_set_add_req(set, req);
262 static int osc_getattr(const struct lu_env *env, struct obd_export *exp,
263 struct obd_info *oinfo)
265 struct ptlrpc_request *req;
266 struct ost_body *body;
270 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_GETATTR);
274 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
275 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GETATTR);
277 ptlrpc_request_free(req);
281 osc_pack_req_body(req, oinfo);
283 ptlrpc_request_set_replen(req);
285 rc = ptlrpc_queue_wait(req);
289 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
291 GOTO(out, rc = -EPROTO);
293 CDEBUG(D_INODE, "mode: %o\n", body->oa.o_mode);
294 lustre_get_wire_obdo(oinfo->oi_oa, &body->oa);
296 oinfo->oi_oa->o_blksize = cli_brw_size(exp->exp_obd);
297 oinfo->oi_oa->o_valid |= OBD_MD_FLBLKSZ;
301 ptlrpc_req_finished(req);
305 static int osc_setattr(const struct lu_env *env, struct obd_export *exp,
306 struct obd_info *oinfo, struct obd_trans_info *oti)
308 struct ptlrpc_request *req;
309 struct ost_body *body;
313 LASSERT(oinfo->oi_oa->o_valid & OBD_MD_FLGROUP);
315 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR);
319 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
320 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR);
322 ptlrpc_request_free(req);
326 osc_pack_req_body(req, oinfo);
328 ptlrpc_request_set_replen(req);
330 rc = ptlrpc_queue_wait(req);
334 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
336 GOTO(out, rc = -EPROTO);
338 lustre_get_wire_obdo(oinfo->oi_oa, &body->oa);
342 ptlrpc_req_finished(req);
346 static int osc_setattr_interpret(const struct lu_env *env,
347 struct ptlrpc_request *req,
348 struct osc_setattr_args *sa, int rc)
350 struct ost_body *body;
356 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
358 GOTO(out, rc = -EPROTO);
360 lustre_get_wire_obdo(sa->sa_oa, &body->oa);
362 rc = sa->sa_upcall(sa->sa_cookie, rc);
366 int osc_setattr_async_base(struct obd_export *exp, struct obd_info *oinfo,
367 struct obd_trans_info *oti,
368 obd_enqueue_update_f upcall, void *cookie,
369 struct ptlrpc_request_set *rqset)
371 struct ptlrpc_request *req;
372 struct osc_setattr_args *sa;
376 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SETATTR);
380 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
381 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SETATTR);
383 ptlrpc_request_free(req);
387 if (oti && oinfo->oi_oa->o_valid & OBD_MD_FLCOOKIE)
388 oinfo->oi_oa->o_lcookie = *oti->oti_logcookies;
390 osc_pack_req_body(req, oinfo);
392 ptlrpc_request_set_replen(req);
394 /* do mds to ost setattr asynchronously */
396 /* Do not wait for response. */
397 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
399 req->rq_interpret_reply =
400 (ptlrpc_interpterer_t)osc_setattr_interpret;
402 CLASSERT (sizeof(*sa) <= sizeof(req->rq_async_args));
403 sa = ptlrpc_req_async_args(req);
404 sa->sa_oa = oinfo->oi_oa;
405 sa->sa_upcall = upcall;
406 sa->sa_cookie = cookie;
408 if (rqset == PTLRPCD_SET)
409 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
411 ptlrpc_set_add_req(rqset, req);
417 static int osc_setattr_async(struct obd_export *exp, struct obd_info *oinfo,
418 struct obd_trans_info *oti,
419 struct ptlrpc_request_set *rqset)
421 return osc_setattr_async_base(exp, oinfo, oti,
422 oinfo->oi_cb_up, oinfo, rqset);
425 int osc_real_create(struct obd_export *exp, struct obdo *oa,
426 struct lov_stripe_md **ea, struct obd_trans_info *oti)
428 struct ptlrpc_request *req;
429 struct ost_body *body;
430 struct lov_stripe_md *lsm;
439 rc = obd_alloc_memmd(exp, &lsm);
444 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_CREATE);
446 GOTO(out, rc = -ENOMEM);
448 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_CREATE);
450 ptlrpc_request_free(req);
454 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
456 lustre_set_wire_obdo(&body->oa, oa);
458 ptlrpc_request_set_replen(req);
460 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
461 oa->o_flags == OBD_FL_DELORPHAN) {
463 "delorphan from OST integration");
464 /* Don't resend the delorphan req */
465 req->rq_no_resend = req->rq_no_delay = 1;
468 rc = ptlrpc_queue_wait(req);
472 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
474 GOTO(out_req, rc = -EPROTO);
476 lustre_get_wire_obdo(oa, &body->oa);
478 oa->o_blksize = cli_brw_size(exp->exp_obd);
479 oa->o_valid |= OBD_MD_FLBLKSZ;
481 /* XXX LOV STACKING: the lsm that is passed to us from LOV does not
482 * have valid lsm_oinfo data structs, so don't go touching that.
483 * This needs to be fixed in a big way.
485 lsm->lsm_oi = oa->o_oi;
489 oti->oti_transno = lustre_msg_get_transno(req->rq_repmsg);
491 if (oa->o_valid & OBD_MD_FLCOOKIE) {
492 if (!oti->oti_logcookies)
493 oti_alloc_cookies(oti, 1);
494 *oti->oti_logcookies = oa->o_lcookie;
498 CDEBUG(D_HA, "transno: "LPD64"\n",
499 lustre_msg_get_transno(req->rq_repmsg));
501 ptlrpc_req_finished(req);
504 obd_free_memmd(exp, &lsm);
508 int osc_punch_base(struct obd_export *exp, struct obd_info *oinfo,
509 obd_enqueue_update_f upcall, void *cookie,
510 struct ptlrpc_request_set *rqset)
512 struct ptlrpc_request *req;
513 struct osc_setattr_args *sa;
514 struct ost_body *body;
518 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_PUNCH);
522 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
523 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_PUNCH);
525 ptlrpc_request_free(req);
528 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
529 ptlrpc_at_set_req_timeout(req);
531 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
533 lustre_set_wire_obdo(&body->oa, oinfo->oi_oa);
534 osc_pack_capa(req, body, oinfo->oi_capa);
536 ptlrpc_request_set_replen(req);
538 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_setattr_interpret;
539 CLASSERT (sizeof(*sa) <= sizeof(req->rq_async_args));
540 sa = ptlrpc_req_async_args(req);
541 sa->sa_oa = oinfo->oi_oa;
542 sa->sa_upcall = upcall;
543 sa->sa_cookie = cookie;
544 if (rqset == PTLRPCD_SET)
545 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
547 ptlrpc_set_add_req(rqset, req);
552 static int osc_punch(const struct lu_env *env, struct obd_export *exp,
553 struct obd_info *oinfo, struct obd_trans_info *oti,
554 struct ptlrpc_request_set *rqset)
556 oinfo->oi_oa->o_size = oinfo->oi_policy.l_extent.start;
557 oinfo->oi_oa->o_blocks = oinfo->oi_policy.l_extent.end;
558 oinfo->oi_oa->o_valid |= OBD_MD_FLSIZE | OBD_MD_FLBLOCKS;
559 return osc_punch_base(exp, oinfo,
560 oinfo->oi_cb_up, oinfo, rqset);
563 static int osc_sync_interpret(const struct lu_env *env,
564 struct ptlrpc_request *req,
567 struct osc_fsync_args *fa = arg;
568 struct ost_body *body;
574 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
576 CERROR ("can't unpack ost_body\n");
577 GOTO(out, rc = -EPROTO);
580 *fa->fa_oi->oi_oa = body->oa;
582 rc = fa->fa_upcall(fa->fa_cookie, rc);
586 int osc_sync_base(struct obd_export *exp, struct obd_info *oinfo,
587 obd_enqueue_update_f upcall, void *cookie,
588 struct ptlrpc_request_set *rqset)
590 struct ptlrpc_request *req;
591 struct ost_body *body;
592 struct osc_fsync_args *fa;
596 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_SYNC);
600 osc_set_capa_size(req, &RMF_CAPA1, oinfo->oi_capa);
601 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SYNC);
603 ptlrpc_request_free(req);
607 /* overload the size and blocks fields in the oa with start/end */
608 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
610 lustre_set_wire_obdo(&body->oa, oinfo->oi_oa);
611 osc_pack_capa(req, body, oinfo->oi_capa);
613 ptlrpc_request_set_replen(req);
614 req->rq_interpret_reply = osc_sync_interpret;
616 CLASSERT(sizeof(*fa) <= sizeof(req->rq_async_args));
617 fa = ptlrpc_req_async_args(req);
619 fa->fa_upcall = upcall;
620 fa->fa_cookie = cookie;
622 if (rqset == PTLRPCD_SET)
623 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
625 ptlrpc_set_add_req(rqset, req);
630 static int osc_sync(const struct lu_env *env, struct obd_export *exp,
631 struct obd_info *oinfo, obd_size start, obd_size end,
632 struct ptlrpc_request_set *set)
637 CDEBUG(D_INFO, "oa NULL\n");
641 oinfo->oi_oa->o_size = start;
642 oinfo->oi_oa->o_blocks = end;
643 oinfo->oi_oa->o_valid |= (OBD_MD_FLSIZE | OBD_MD_FLBLOCKS);
645 RETURN(osc_sync_base(exp, oinfo, oinfo->oi_cb_up, oinfo, set));
648 /* Find and cancel locally locks matched by @mode in the resource found by
649 * @objid. Found locks are added into @cancel list. Returns the amount of
650 * locks added to @cancels list. */
651 static int osc_resource_get_unused(struct obd_export *exp, struct obdo *oa,
653 ldlm_mode_t mode, int lock_flags)
655 struct ldlm_namespace *ns = exp->exp_obd->obd_namespace;
656 struct ldlm_res_id res_id;
657 struct ldlm_resource *res;
661 /* Return, i.e. cancel nothing, only if ELC is supported (flag in
662 * export) but disabled through procfs (flag in NS).
664 * This distinguishes from a case when ELC is not supported originally,
665 * when we still want to cancel locks in advance and just cancel them
666 * locally, without sending any RPC. */
667 if (exp_connect_cancelset(exp) && !ns_connect_cancelset(ns))
670 ostid_build_res_name(&oa->o_oi, &res_id);
671 res = ldlm_resource_get(ns, NULL, &res_id, 0, 0);
675 LDLM_RESOURCE_ADDREF(res);
676 count = ldlm_cancel_resource_local(res, cancels, NULL, mode,
677 lock_flags, 0, NULL);
678 LDLM_RESOURCE_DELREF(res);
679 ldlm_resource_putref(res);
683 static int osc_destroy_interpret(const struct lu_env *env,
684 struct ptlrpc_request *req, void *data,
687 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
689 cfs_atomic_dec(&cli->cl_destroy_in_flight);
690 cfs_waitq_signal(&cli->cl_destroy_waitq);
694 static int osc_can_send_destroy(struct client_obd *cli)
696 if (cfs_atomic_inc_return(&cli->cl_destroy_in_flight) <=
697 cli->cl_max_rpcs_in_flight) {
698 /* The destroy request can be sent */
701 if (cfs_atomic_dec_return(&cli->cl_destroy_in_flight) <
702 cli->cl_max_rpcs_in_flight) {
704 * The counter has been modified between the two atomic
707 cfs_waitq_signal(&cli->cl_destroy_waitq);
712 int osc_create(const struct lu_env *env, struct obd_export *exp,
713 struct obdo *oa, struct lov_stripe_md **ea,
714 struct obd_trans_info *oti)
721 LASSERT(oa->o_valid & OBD_MD_FLGROUP);
723 if ((oa->o_valid & OBD_MD_FLFLAGS) &&
724 oa->o_flags == OBD_FL_RECREATE_OBJS) {
725 RETURN(osc_real_create(exp, oa, ea, oti));
728 if (!fid_seq_is_mdt(ostid_seq(&oa->o_oi)))
729 RETURN(osc_real_create(exp, oa, ea, oti));
731 /* we should not get here anymore */
737 /* Destroy requests can be async always on the client, and we don't even really
738 * care about the return code since the client cannot do anything at all about
740 * When the MDS is unlinking a filename, it saves the file objects into a
741 * recovery llog, and these object records are cancelled when the OST reports
742 * they were destroyed and sync'd to disk (i.e. transaction committed).
743 * If the client dies, or the OST is down when the object should be destroyed,
744 * the records are not cancelled, and when the OST reconnects to the MDS next,
745 * it will retrieve the llog unlink logs and then sends the log cancellation
746 * cookies to the MDS after committing destroy transactions. */
747 static int osc_destroy(const struct lu_env *env, struct obd_export *exp,
748 struct obdo *oa, struct lov_stripe_md *ea,
749 struct obd_trans_info *oti, struct obd_export *md_export,
752 struct client_obd *cli = &exp->exp_obd->u.cli;
753 struct ptlrpc_request *req;
754 struct ost_body *body;
755 CFS_LIST_HEAD(cancels);
760 CDEBUG(D_INFO, "oa NULL\n");
764 count = osc_resource_get_unused(exp, oa, &cancels, LCK_PW,
765 LDLM_FL_DISCARD_DATA);
767 req = ptlrpc_request_alloc(class_exp2cliimp(exp), &RQF_OST_DESTROY);
769 ldlm_lock_list_put(&cancels, l_bl_ast, count);
773 osc_set_capa_size(req, &RMF_CAPA1, (struct obd_capa *)capa);
774 rc = ldlm_prep_elc_req(exp, req, LUSTRE_OST_VERSION, OST_DESTROY,
777 ptlrpc_request_free(req);
781 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
782 ptlrpc_at_set_req_timeout(req);
784 if (oti != NULL && oa->o_valid & OBD_MD_FLCOOKIE)
785 oa->o_lcookie = *oti->oti_logcookies;
786 body = req_capsule_client_get(&req->rq_pill, &RMF_OST_BODY);
788 lustre_set_wire_obdo(&body->oa, oa);
790 osc_pack_capa(req, body, (struct obd_capa *)capa);
791 ptlrpc_request_set_replen(req);
793 /* If osc_destory is for destroying the unlink orphan,
794 * sent from MDT to OST, which should not be blocked here,
795 * because the process might be triggered by ptlrpcd, and
796 * it is not good to block ptlrpcd thread (b=16006)*/
797 if (!(oa->o_flags & OBD_FL_DELORPHAN)) {
798 req->rq_interpret_reply = osc_destroy_interpret;
799 if (!osc_can_send_destroy(cli)) {
800 struct l_wait_info lwi = LWI_INTR(LWI_ON_SIGNAL_NOOP,
804 * Wait until the number of on-going destroy RPCs drops
805 * under max_rpc_in_flight
807 l_wait_event_exclusive(cli->cl_destroy_waitq,
808 osc_can_send_destroy(cli), &lwi);
812 /* Do not wait for response */
813 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
817 static void osc_announce_cached(struct client_obd *cli, struct obdo *oa,
820 obd_flag bits = OBD_MD_FLBLOCKS|OBD_MD_FLGRANT;
822 LASSERT(!(oa->o_valid & bits));
825 client_obd_list_lock(&cli->cl_loi_list_lock);
826 oa->o_dirty = cli->cl_dirty;
827 if (unlikely(cli->cl_dirty - cli->cl_dirty_transit >
828 cli->cl_dirty_max)) {
829 CERROR("dirty %lu - %lu > dirty_max %lu\n",
830 cli->cl_dirty, cli->cl_dirty_transit, cli->cl_dirty_max);
832 } else if (unlikely(cfs_atomic_read(&obd_dirty_pages) -
833 cfs_atomic_read(&obd_dirty_transit_pages) >
834 (long)(obd_max_dirty_pages + 1))) {
835 /* The cfs_atomic_read() allowing the cfs_atomic_inc() are
836 * not covered by a lock thus they may safely race and trip
837 * this CERROR() unless we add in a small fudge factor (+1). */
838 CERROR("dirty %d - %d > system dirty_max %d\n",
839 cfs_atomic_read(&obd_dirty_pages),
840 cfs_atomic_read(&obd_dirty_transit_pages),
841 obd_max_dirty_pages);
843 } else if (unlikely(cli->cl_dirty_max - cli->cl_dirty > 0x7fffffff)) {
844 CERROR("dirty %lu - dirty_max %lu too big???\n",
845 cli->cl_dirty, cli->cl_dirty_max);
848 long max_in_flight = (cli->cl_max_pages_per_rpc <<
850 (cli->cl_max_rpcs_in_flight + 1);
851 oa->o_undirty = max(cli->cl_dirty_max, max_in_flight);
853 oa->o_grant = cli->cl_avail_grant + cli->cl_reserved_grant;
854 oa->o_dropped = cli->cl_lost_grant;
855 cli->cl_lost_grant = 0;
856 client_obd_list_unlock(&cli->cl_loi_list_lock);
857 CDEBUG(D_CACHE,"dirty: "LPU64" undirty: %u dropped %u grant: "LPU64"\n",
858 oa->o_dirty, oa->o_undirty, oa->o_dropped, oa->o_grant);
862 void osc_update_next_shrink(struct client_obd *cli)
864 cli->cl_next_shrink_grant =
865 cfs_time_shift(cli->cl_grant_shrink_interval);
866 CDEBUG(D_CACHE, "next time %ld to shrink grant \n",
867 cli->cl_next_shrink_grant);
870 static void __osc_update_grant(struct client_obd *cli, obd_size grant)
872 client_obd_list_lock(&cli->cl_loi_list_lock);
873 cli->cl_avail_grant += grant;
874 client_obd_list_unlock(&cli->cl_loi_list_lock);
877 static void osc_update_grant(struct client_obd *cli, struct ost_body *body)
879 if (body->oa.o_valid & OBD_MD_FLGRANT) {
880 CDEBUG(D_CACHE, "got "LPU64" extra grant\n", body->oa.o_grant);
881 __osc_update_grant(cli, body->oa.o_grant);
885 static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
886 obd_count keylen, void *key, obd_count vallen,
887 void *val, struct ptlrpc_request_set *set);
889 static int osc_shrink_grant_interpret(const struct lu_env *env,
890 struct ptlrpc_request *req,
893 struct client_obd *cli = &req->rq_import->imp_obd->u.cli;
894 struct obdo *oa = ((struct osc_grant_args *)aa)->aa_oa;
895 struct ost_body *body;
898 __osc_update_grant(cli, oa->o_grant);
902 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
904 osc_update_grant(cli, body);
910 static void osc_shrink_grant_local(struct client_obd *cli, struct obdo *oa)
912 client_obd_list_lock(&cli->cl_loi_list_lock);
913 oa->o_grant = cli->cl_avail_grant / 4;
914 cli->cl_avail_grant -= oa->o_grant;
915 client_obd_list_unlock(&cli->cl_loi_list_lock);
916 if (!(oa->o_valid & OBD_MD_FLFLAGS)) {
917 oa->o_valid |= OBD_MD_FLFLAGS;
920 oa->o_flags |= OBD_FL_SHRINK_GRANT;
921 osc_update_next_shrink(cli);
924 /* Shrink the current grant, either from some large amount to enough for a
925 * full set of in-flight RPCs, or if we have already shrunk to that limit
926 * then to enough for a single RPC. This avoids keeping more grant than
927 * needed, and avoids shrinking the grant piecemeal. */
928 static int osc_shrink_grant(struct client_obd *cli)
930 __u64 target_bytes = (cli->cl_max_rpcs_in_flight + 1) *
931 (cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT);
933 client_obd_list_lock(&cli->cl_loi_list_lock);
934 if (cli->cl_avail_grant <= target_bytes)
935 target_bytes = cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT;
936 client_obd_list_unlock(&cli->cl_loi_list_lock);
938 return osc_shrink_grant_to_target(cli, target_bytes);
941 int osc_shrink_grant_to_target(struct client_obd *cli, __u64 target_bytes)
944 struct ost_body *body;
947 client_obd_list_lock(&cli->cl_loi_list_lock);
948 /* Don't shrink if we are already above or below the desired limit
949 * We don't want to shrink below a single RPC, as that will negatively
950 * impact block allocation and long-term performance. */
951 if (target_bytes < cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT)
952 target_bytes = cli->cl_max_pages_per_rpc << CFS_PAGE_SHIFT;
954 if (target_bytes >= cli->cl_avail_grant) {
955 client_obd_list_unlock(&cli->cl_loi_list_lock);
958 client_obd_list_unlock(&cli->cl_loi_list_lock);
964 osc_announce_cached(cli, &body->oa, 0);
966 client_obd_list_lock(&cli->cl_loi_list_lock);
967 body->oa.o_grant = cli->cl_avail_grant - target_bytes;
968 cli->cl_avail_grant = target_bytes;
969 client_obd_list_unlock(&cli->cl_loi_list_lock);
970 if (!(body->oa.o_valid & OBD_MD_FLFLAGS)) {
971 body->oa.o_valid |= OBD_MD_FLFLAGS;
972 body->oa.o_flags = 0;
974 body->oa.o_flags |= OBD_FL_SHRINK_GRANT;
975 osc_update_next_shrink(cli);
977 rc = osc_set_info_async(NULL, cli->cl_import->imp_obd->obd_self_export,
978 sizeof(KEY_GRANT_SHRINK), KEY_GRANT_SHRINK,
979 sizeof(*body), body, NULL);
981 __osc_update_grant(cli, body->oa.o_grant);
986 static int osc_should_shrink_grant(struct client_obd *client)
988 cfs_time_t time = cfs_time_current();
989 cfs_time_t next_shrink = client->cl_next_shrink_grant;
991 if ((client->cl_import->imp_connect_data.ocd_connect_flags &
992 OBD_CONNECT_GRANT_SHRINK) == 0)
995 if (cfs_time_aftereq(time, next_shrink - 5 * CFS_TICK)) {
996 /* Get the current RPC size directly, instead of going via:
997 * cli_brw_size(obd->u.cli.cl_import->imp_obd->obd_self_export)
998 * Keep comment here so that it can be found by searching. */
999 int brw_size = client->cl_max_pages_per_rpc << CFS_PAGE_SHIFT;
1001 if (client->cl_import->imp_state == LUSTRE_IMP_FULL &&
1002 client->cl_avail_grant > brw_size)
1005 osc_update_next_shrink(client);
1010 static int osc_grant_shrink_grant_cb(struct timeout_item *item, void *data)
1012 struct client_obd *client;
1014 cfs_list_for_each_entry(client, &item->ti_obd_list,
1015 cl_grant_shrink_list) {
1016 if (osc_should_shrink_grant(client))
1017 osc_shrink_grant(client);
1022 static int osc_add_shrink_grant(struct client_obd *client)
1026 rc = ptlrpc_add_timeout_client(client->cl_grant_shrink_interval,
1028 osc_grant_shrink_grant_cb, NULL,
1029 &client->cl_grant_shrink_list);
1031 CERROR("add grant client %s error %d\n",
1032 client->cl_import->imp_obd->obd_name, rc);
1035 CDEBUG(D_CACHE, "add grant client %s \n",
1036 client->cl_import->imp_obd->obd_name);
1037 osc_update_next_shrink(client);
1041 static int osc_del_shrink_grant(struct client_obd *client)
1043 return ptlrpc_del_timeout_client(&client->cl_grant_shrink_list,
1047 static void osc_init_grant(struct client_obd *cli, struct obd_connect_data *ocd)
1050 * ocd_grant is the total grant amount we're expect to hold: if we've
1051 * been evicted, it's the new avail_grant amount, cl_dirty will drop
1052 * to 0 as inflight RPCs fail out; otherwise, it's avail_grant + dirty.
1054 * race is tolerable here: if we're evicted, but imp_state already
1055 * left EVICTED state, then cl_dirty must be 0 already.
1057 client_obd_list_lock(&cli->cl_loi_list_lock);
1058 if (cli->cl_import->imp_state == LUSTRE_IMP_EVICTED)
1059 cli->cl_avail_grant = ocd->ocd_grant;
1061 cli->cl_avail_grant = ocd->ocd_grant - cli->cl_dirty;
1063 if (cli->cl_avail_grant < 0) {
1064 CWARN("%s: available grant < 0: avail/ocd/dirty %ld/%u/%ld\n",
1065 cli->cl_import->imp_obd->obd_name, cli->cl_avail_grant,
1066 ocd->ocd_grant, cli->cl_dirty);
1067 /* workaround for servers which do not have the patch from
1069 cli->cl_avail_grant = ocd->ocd_grant;
1072 /* determine the appropriate chunk size used by osc_extent. */
1073 cli->cl_chunkbits = max_t(int, CFS_PAGE_SHIFT, ocd->ocd_blocksize);
1074 client_obd_list_unlock(&cli->cl_loi_list_lock);
1076 CDEBUG(D_CACHE, "%s, setting cl_avail_grant: %ld cl_lost_grant: %ld."
1077 "chunk bits: %d.\n", cli->cl_import->imp_obd->obd_name,
1078 cli->cl_avail_grant, cli->cl_lost_grant, cli->cl_chunkbits);
1080 if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT_SHRINK &&
1081 cfs_list_empty(&cli->cl_grant_shrink_list))
1082 osc_add_shrink_grant(cli);
1085 /* We assume that the reason this OSC got a short read is because it read
1086 * beyond the end of a stripe file; i.e. lustre is reading a sparse file
1087 * via the LOV, and it _knows_ it's reading inside the file, it's just that
1088 * this stripe never got written at or beyond this stripe offset yet. */
1089 static void handle_short_read(int nob_read, obd_count page_count,
1090 struct brw_page **pga)
1095 /* skip bytes read OK */
1096 while (nob_read > 0) {
1097 LASSERT (page_count > 0);
1099 if (pga[i]->count > nob_read) {
1100 /* EOF inside this page */
1101 ptr = cfs_kmap(pga[i]->pg) +
1102 (pga[i]->off & ~CFS_PAGE_MASK);
1103 memset(ptr + nob_read, 0, pga[i]->count - nob_read);
1104 cfs_kunmap(pga[i]->pg);
1110 nob_read -= pga[i]->count;
1115 /* zero remaining pages */
1116 while (page_count-- > 0) {
1117 ptr = cfs_kmap(pga[i]->pg) + (pga[i]->off & ~CFS_PAGE_MASK);
1118 memset(ptr, 0, pga[i]->count);
1119 cfs_kunmap(pga[i]->pg);
1124 static int check_write_rcs(struct ptlrpc_request *req,
1125 int requested_nob, int niocount,
1126 obd_count page_count, struct brw_page **pga)
1131 remote_rcs = req_capsule_server_sized_get(&req->rq_pill, &RMF_RCS,
1132 sizeof(*remote_rcs) *
1134 if (remote_rcs == NULL) {
1135 CDEBUG(D_INFO, "Missing/short RC vector on BRW_WRITE reply\n");
1139 /* return error if any niobuf was in error */
1140 for (i = 0; i < niocount; i++) {
1141 if ((int)remote_rcs[i] < 0)
1142 return(remote_rcs[i]);
1144 if (remote_rcs[i] != 0) {
1145 CDEBUG(D_INFO, "rc[%d] invalid (%d) req %p\n",
1146 i, remote_rcs[i], req);
1151 if (req->rq_bulk->bd_nob_transferred != requested_nob) {
1152 CERROR("Unexpected # bytes transferred: %d (requested %d)\n",
1153 req->rq_bulk->bd_nob_transferred, requested_nob);
1160 static inline int can_merge_pages(struct brw_page *p1, struct brw_page *p2)
1162 if (p1->flag != p2->flag) {
1163 unsigned mask = ~(OBD_BRW_FROM_GRANT| OBD_BRW_NOCACHE|
1164 OBD_BRW_SYNC|OBD_BRW_ASYNC|OBD_BRW_NOQUOTA);
1166 /* warn if we try to combine flags that we don't know to be
1167 * safe to combine */
1168 if (unlikely((p1->flag & mask) != (p2->flag & mask))) {
1169 CWARN("Saw flags 0x%x and 0x%x in the same brw, please "
1170 "report this at http://bugs.whamcloud.com/\n",
1171 p1->flag, p2->flag);
1176 return (p1->off + p1->count == p2->off);
1179 static obd_count osc_checksum_bulk(int nob, obd_count pg_count,
1180 struct brw_page **pga, int opc,
1181 cksum_type_t cksum_type)
1185 struct cfs_crypto_hash_desc *hdesc;
1186 unsigned int bufsize;
1188 unsigned char cfs_alg = cksum_obd2cfs(cksum_type);
1190 LASSERT(pg_count > 0);
1192 hdesc = cfs_crypto_hash_init(cfs_alg, NULL, 0);
1193 if (IS_ERR(hdesc)) {
1194 CERROR("Unable to initialize checksum hash %s\n",
1195 cfs_crypto_hash_name(cfs_alg));
1196 return PTR_ERR(hdesc);
1199 while (nob > 0 && pg_count > 0) {
1200 int count = pga[i]->count > nob ? nob : pga[i]->count;
1202 /* corrupt the data before we compute the checksum, to
1203 * simulate an OST->client data error */
1204 if (i == 0 && opc == OST_READ &&
1205 OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_RECEIVE)) {
1206 unsigned char *ptr = cfs_kmap(pga[i]->pg);
1207 int off = pga[i]->off & ~CFS_PAGE_MASK;
1208 memcpy(ptr + off, "bad1", min(4, nob));
1209 cfs_kunmap(pga[i]->pg);
1211 cfs_crypto_hash_update_page(hdesc, pga[i]->pg,
1212 pga[i]->off & ~CFS_PAGE_MASK,
1214 LL_CDEBUG_PAGE(D_PAGE, pga[i]->pg, "off %d\n",
1215 (int)(pga[i]->off & ~CFS_PAGE_MASK));
1217 nob -= pga[i]->count;
1223 err = cfs_crypto_hash_final(hdesc, (unsigned char *)&cksum, &bufsize);
1226 cfs_crypto_hash_final(hdesc, NULL, NULL);
1228 /* For sending we only compute the wrong checksum instead
1229 * of corrupting the data so it is still correct on a redo */
1230 if (opc == OST_WRITE && OBD_FAIL_CHECK(OBD_FAIL_OSC_CHECKSUM_SEND))
1236 static int osc_brw_prep_request(int cmd, struct client_obd *cli,struct obdo *oa,
1237 struct lov_stripe_md *lsm, obd_count page_count,
1238 struct brw_page **pga,
1239 struct ptlrpc_request **reqp,
1240 struct obd_capa *ocapa, int reserve,
1243 struct ptlrpc_request *req;
1244 struct ptlrpc_bulk_desc *desc;
1245 struct ost_body *body;
1246 struct obd_ioobj *ioobj;
1247 struct niobuf_remote *niobuf;
1248 int niocount, i, requested_nob, opc, rc;
1249 struct osc_brw_async_args *aa;
1250 struct req_capsule *pill;
1251 struct brw_page *pg_prev;
1254 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ))
1255 RETURN(-ENOMEM); /* Recoverable */
1256 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_BRW_PREP_REQ2))
1257 RETURN(-EINVAL); /* Fatal */
1259 if ((cmd & OBD_BRW_WRITE) != 0) {
1261 req = ptlrpc_request_alloc_pool(cli->cl_import,
1262 cli->cl_import->imp_rq_pool,
1263 &RQF_OST_BRW_WRITE);
1266 req = ptlrpc_request_alloc(cli->cl_import, &RQF_OST_BRW_READ);
1271 for (niocount = i = 1; i < page_count; i++) {
1272 if (!can_merge_pages(pga[i - 1], pga[i]))
1276 pill = &req->rq_pill;
1277 req_capsule_set_size(pill, &RMF_OBD_IOOBJ, RCL_CLIENT,
1279 req_capsule_set_size(pill, &RMF_NIOBUF_REMOTE, RCL_CLIENT,
1280 niocount * sizeof(*niobuf));
1281 osc_set_capa_size(req, &RMF_CAPA1, ocapa);
1283 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, opc);
1285 ptlrpc_request_free(req);
1288 req->rq_request_portal = OST_IO_PORTAL; /* bug 7198 */
1289 ptlrpc_at_set_req_timeout(req);
1290 /* ask ptlrpc not to resend on EINPROGRESS since BRWs have their own
1292 req->rq_no_retry_einprogress = 1;
1294 desc = ptlrpc_prep_bulk_imp(req, page_count,
1295 cli->cl_import->imp_connect_data.ocd_brw_size >> LNET_MTU_BITS,
1296 opc == OST_WRITE ? BULK_GET_SOURCE : BULK_PUT_SINK,
1300 GOTO(out, rc = -ENOMEM);
1301 /* NB request now owns desc and will free it when it gets freed */
1303 body = req_capsule_client_get(pill, &RMF_OST_BODY);
1304 ioobj = req_capsule_client_get(pill, &RMF_OBD_IOOBJ);
1305 niobuf = req_capsule_client_get(pill, &RMF_NIOBUF_REMOTE);
1306 LASSERT(body != NULL && ioobj != NULL && niobuf != NULL);
1308 lustre_set_wire_obdo(&body->oa, oa);
1310 obdo_to_ioobj(oa, ioobj);
1311 ioobj->ioo_bufcnt = niocount;
1312 /* The high bits of ioo_max_brw tells server _maximum_ number of bulks
1313 * that might be send for this request. The actual number is decided
1314 * when the RPC is finally sent in ptlrpc_register_bulk(). It sends
1315 * "max - 1" for old client compatibility sending "0", and also so the
1316 * the actual maximum is a power-of-two number, not one less. LU-1431 */
1317 ioobj_max_brw_set(ioobj, desc->bd_md_max_brw);
1318 osc_pack_capa(req, body, ocapa);
1319 LASSERT(page_count > 0);
1321 for (requested_nob = i = 0; i < page_count; i++, niobuf++) {
1322 struct brw_page *pg = pga[i];
1323 int poff = pg->off & ~CFS_PAGE_MASK;
1325 LASSERT(pg->count > 0);
1326 /* make sure there is no gap in the middle of page array */
1327 LASSERTF(page_count == 1 ||
1328 (ergo(i == 0, poff + pg->count == CFS_PAGE_SIZE) &&
1329 ergo(i > 0 && i < page_count - 1,
1330 poff == 0 && pg->count == CFS_PAGE_SIZE) &&
1331 ergo(i == page_count - 1, poff == 0)),
1332 "i: %d/%d pg: %p off: "LPU64", count: %u\n",
1333 i, page_count, pg, pg->off, pg->count);
1335 LASSERTF(i == 0 || pg->off > pg_prev->off,
1336 "i %d p_c %u pg %p [pri %lu ind %lu] off "LPU64
1337 " prev_pg %p [pri %lu ind %lu] off "LPU64"\n",
1339 pg->pg, page_private(pg->pg), pg->pg->index, pg->off,
1340 pg_prev->pg, page_private(pg_prev->pg),
1341 pg_prev->pg->index, pg_prev->off);
1343 LASSERTF(i == 0 || pg->off > pg_prev->off,
1344 "i %d p_c %u\n", i, page_count);
1346 LASSERT((pga[0]->flag & OBD_BRW_SRVLOCK) ==
1347 (pg->flag & OBD_BRW_SRVLOCK));
1349 ptlrpc_prep_bulk_page_pin(desc, pg->pg, poff, pg->count);
1350 requested_nob += pg->count;
1352 if (i > 0 && can_merge_pages(pg_prev, pg)) {
1354 niobuf->len += pg->count;
1356 niobuf->offset = pg->off;
1357 niobuf->len = pg->count;
1358 niobuf->flags = pg->flag;
1363 LASSERTF((void *)(niobuf - niocount) ==
1364 req_capsule_client_get(&req->rq_pill, &RMF_NIOBUF_REMOTE),
1365 "want %p - real %p\n", req_capsule_client_get(&req->rq_pill,
1366 &RMF_NIOBUF_REMOTE), (void *)(niobuf - niocount));
1368 osc_announce_cached(cli, &body->oa, opc == OST_WRITE ? requested_nob:0);
1370 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
1371 body->oa.o_valid |= OBD_MD_FLFLAGS;
1372 body->oa.o_flags = 0;
1374 body->oa.o_flags |= OBD_FL_RECOV_RESEND;
1377 if (osc_should_shrink_grant(cli))
1378 osc_shrink_grant_local(cli, &body->oa);
1380 /* size[REQ_REC_OFF] still sizeof (*body) */
1381 if (opc == OST_WRITE) {
1382 if (cli->cl_checksum &&
1383 !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
1384 /* store cl_cksum_type in a local variable since
1385 * it can be changed via lprocfs */
1386 cksum_type_t cksum_type = cli->cl_cksum_type;
1388 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0) {
1389 oa->o_flags &= OBD_FL_LOCAL_MASK;
1390 body->oa.o_flags = 0;
1392 body->oa.o_flags |= cksum_type_pack(cksum_type);
1393 body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1394 body->oa.o_cksum = osc_checksum_bulk(requested_nob,
1398 CDEBUG(D_PAGE, "checksum at write origin: %x\n",
1400 /* save this in 'oa', too, for later checking */
1401 oa->o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1402 oa->o_flags |= cksum_type_pack(cksum_type);
1404 /* clear out the checksum flag, in case this is a
1405 * resend but cl_checksum is no longer set. b=11238 */
1406 oa->o_valid &= ~OBD_MD_FLCKSUM;
1408 oa->o_cksum = body->oa.o_cksum;
1409 /* 1 RC per niobuf */
1410 req_capsule_set_size(pill, &RMF_RCS, RCL_SERVER,
1411 sizeof(__u32) * niocount);
1413 if (cli->cl_checksum &&
1414 !sptlrpc_flavor_has_bulk(&req->rq_flvr)) {
1415 if ((body->oa.o_valid & OBD_MD_FLFLAGS) == 0)
1416 body->oa.o_flags = 0;
1417 body->oa.o_flags |= cksum_type_pack(cli->cl_cksum_type);
1418 body->oa.o_valid |= OBD_MD_FLCKSUM | OBD_MD_FLFLAGS;
1421 ptlrpc_request_set_replen(req);
1423 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
1424 aa = ptlrpc_req_async_args(req);
1426 aa->aa_requested_nob = requested_nob;
1427 aa->aa_nio_count = niocount;
1428 aa->aa_page_count = page_count;
1432 CFS_INIT_LIST_HEAD(&aa->aa_oaps);
1433 if (ocapa && reserve)
1434 aa->aa_ocapa = capa_get(ocapa);
1440 ptlrpc_req_finished(req);
1444 static int check_write_checksum(struct obdo *oa, const lnet_process_id_t *peer,
1445 __u32 client_cksum, __u32 server_cksum, int nob,
1446 obd_count page_count, struct brw_page **pga,
1447 cksum_type_t client_cksum_type)
1451 cksum_type_t cksum_type;
1453 if (server_cksum == client_cksum) {
1454 CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
1458 cksum_type = cksum_type_unpack(oa->o_valid & OBD_MD_FLFLAGS ?
1460 new_cksum = osc_checksum_bulk(nob, page_count, pga, OST_WRITE,
1463 if (cksum_type != client_cksum_type)
1464 msg = "the server did not use the checksum type specified in "
1465 "the original request - likely a protocol problem";
1466 else if (new_cksum == server_cksum)
1467 msg = "changed on the client after we checksummed it - "
1468 "likely false positive due to mmap IO (bug 11742)";
1469 else if (new_cksum == client_cksum)
1470 msg = "changed in transit before arrival at OST";
1472 msg = "changed in transit AND doesn't match the original - "
1473 "likely false positive due to mmap IO (bug 11742)";
1475 LCONSOLE_ERROR_MSG(0x132, "BAD WRITE CHECKSUM: %s: from %s inode "DFID
1476 " object "DOSTID" extent ["LPU64"-"LPU64"]\n",
1477 msg, libcfs_nid2str(peer->nid),
1478 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_seq : (__u64)0,
1479 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_oid : 0,
1480 oa->o_valid & OBD_MD_FLFID ? oa->o_parent_ver : 0,
1481 POSTID(&oa->o_oi), pga[0]->off,
1482 pga[page_count-1]->off + pga[page_count-1]->count - 1);
1483 CERROR("original client csum %x (type %x), server csum %x (type %x), "
1484 "client csum now %x\n", client_cksum, client_cksum_type,
1485 server_cksum, cksum_type, new_cksum);
1489 /* Note rc enters this function as number of bytes transferred */
1490 static int osc_brw_fini_request(struct ptlrpc_request *req, int rc)
1492 struct osc_brw_async_args *aa = (void *)&req->rq_async_args;
1493 const lnet_process_id_t *peer =
1494 &req->rq_import->imp_connection->c_peer;
1495 struct client_obd *cli = aa->aa_cli;
1496 struct ost_body *body;
1497 __u32 client_cksum = 0;
1500 if (rc < 0 && rc != -EDQUOT) {
1501 DEBUG_REQ(D_INFO, req, "Failed request with rc = %d\n", rc);
1505 LASSERTF(req->rq_repmsg != NULL, "rc = %d\n", rc);
1506 body = req_capsule_server_get(&req->rq_pill, &RMF_OST_BODY);
1508 DEBUG_REQ(D_INFO, req, "Can't unpack body\n");
1512 /* set/clear over quota flag for a uid/gid */
1513 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE &&
1514 body->oa.o_valid & (OBD_MD_FLUSRQUOTA | OBD_MD_FLGRPQUOTA)) {
1515 unsigned int qid[MAXQUOTAS] = { body->oa.o_uid, body->oa.o_gid };
1517 CDEBUG(D_QUOTA, "setdq for [%u %u] with valid "LPX64", flags %x\n",
1518 body->oa.o_uid, body->oa.o_gid, body->oa.o_valid,
1520 osc_quota_setdq(cli, qid, body->oa.o_valid, body->oa.o_flags);
1523 osc_update_grant(cli, body);
1528 if (aa->aa_oa->o_valid & OBD_MD_FLCKSUM)
1529 client_cksum = aa->aa_oa->o_cksum; /* save for later */
1531 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE) {
1533 CERROR("Unexpected +ve rc %d\n", rc);
1536 LASSERT(req->rq_bulk->bd_nob == aa->aa_requested_nob);
1538 if (sptlrpc_cli_unwrap_bulk_write(req, req->rq_bulk))
1541 if ((aa->aa_oa->o_valid & OBD_MD_FLCKSUM) && client_cksum &&
1542 check_write_checksum(&body->oa, peer, client_cksum,
1543 body->oa.o_cksum, aa->aa_requested_nob,
1544 aa->aa_page_count, aa->aa_ppga,
1545 cksum_type_unpack(aa->aa_oa->o_flags)))
1548 rc = check_write_rcs(req, aa->aa_requested_nob,aa->aa_nio_count,
1549 aa->aa_page_count, aa->aa_ppga);
1553 /* The rest of this function executes only for OST_READs */
1555 /* if unwrap_bulk failed, return -EAGAIN to retry */
1556 rc = sptlrpc_cli_unwrap_bulk_read(req, req->rq_bulk, rc);
1558 GOTO(out, rc = -EAGAIN);
1560 if (rc > aa->aa_requested_nob) {
1561 CERROR("Unexpected rc %d (%d requested)\n", rc,
1562 aa->aa_requested_nob);
1566 if (rc != req->rq_bulk->bd_nob_transferred) {
1567 CERROR ("Unexpected rc %d (%d transferred)\n",
1568 rc, req->rq_bulk->bd_nob_transferred);
1572 if (rc < aa->aa_requested_nob)
1573 handle_short_read(rc, aa->aa_page_count, aa->aa_ppga);
1575 if (body->oa.o_valid & OBD_MD_FLCKSUM) {
1576 static int cksum_counter;
1577 __u32 server_cksum = body->oa.o_cksum;
1580 cksum_type_t cksum_type;
1582 cksum_type = cksum_type_unpack(body->oa.o_valid &OBD_MD_FLFLAGS?
1583 body->oa.o_flags : 0);
1584 client_cksum = osc_checksum_bulk(rc, aa->aa_page_count,
1585 aa->aa_ppga, OST_READ,
1588 if (peer->nid == req->rq_bulk->bd_sender) {
1592 router = libcfs_nid2str(req->rq_bulk->bd_sender);
1595 if (server_cksum == ~0 && rc > 0) {
1596 CERROR("Protocol error: server %s set the 'checksum' "
1597 "bit, but didn't send a checksum. Not fatal, "
1598 "but please notify on http://bugs.whamcloud.com/\n",
1599 libcfs_nid2str(peer->nid));
1600 } else if (server_cksum != client_cksum) {
1601 LCONSOLE_ERROR_MSG(0x133, "%s: BAD READ CHECKSUM: from "
1602 "%s%s%s inode "DFID" object "DOSTID
1603 " extent ["LPU64"-"LPU64"]\n",
1604 req->rq_import->imp_obd->obd_name,
1605 libcfs_nid2str(peer->nid),
1607 body->oa.o_valid & OBD_MD_FLFID ?
1608 body->oa.o_parent_seq : (__u64)0,
1609 body->oa.o_valid & OBD_MD_FLFID ?
1610 body->oa.o_parent_oid : 0,
1611 body->oa.o_valid & OBD_MD_FLFID ?
1612 body->oa.o_parent_ver : 0,
1613 POSTID(&body->oa.o_oi),
1614 aa->aa_ppga[0]->off,
1615 aa->aa_ppga[aa->aa_page_count-1]->off +
1616 aa->aa_ppga[aa->aa_page_count-1]->count -
1618 CERROR("client %x, server %x, cksum_type %x\n",
1619 client_cksum, server_cksum, cksum_type);
1621 aa->aa_oa->o_cksum = client_cksum;
1625 CDEBUG(D_PAGE, "checksum %x confirmed\n", client_cksum);
1628 } else if (unlikely(client_cksum)) {
1629 static int cksum_missed;
1632 if ((cksum_missed & (-cksum_missed)) == cksum_missed)
1633 CERROR("Checksum %u requested from %s but not sent\n",
1634 cksum_missed, libcfs_nid2str(peer->nid));
1640 lustre_get_wire_obdo(aa->aa_oa, &body->oa);
1645 static int osc_brw_internal(int cmd, struct obd_export *exp, struct obdo *oa,
1646 struct lov_stripe_md *lsm,
1647 obd_count page_count, struct brw_page **pga,
1648 struct obd_capa *ocapa)
1650 struct ptlrpc_request *req;
1653 int generation, resends = 0;
1654 struct l_wait_info lwi;
1658 cfs_waitq_init(&waitq);
1659 generation = exp->exp_obd->u.cli.cl_import->imp_generation;
1662 rc = osc_brw_prep_request(cmd, &exp->exp_obd->u.cli, oa, lsm,
1663 page_count, pga, &req, ocapa, 0, resends);
1668 req->rq_generation_set = 1;
1669 req->rq_import_generation = generation;
1670 req->rq_sent = cfs_time_current_sec() + resends;
1673 rc = ptlrpc_queue_wait(req);
1675 if (rc == -ETIMEDOUT && req->rq_resend) {
1676 DEBUG_REQ(D_HA, req, "BULK TIMEOUT");
1677 ptlrpc_req_finished(req);
1681 rc = osc_brw_fini_request(req, rc);
1683 ptlrpc_req_finished(req);
1684 /* When server return -EINPROGRESS, client should always retry
1685 * regardless of the number of times the bulk was resent already.*/
1686 if (osc_recoverable_error(rc)) {
1688 if (rc != -EINPROGRESS &&
1689 !client_should_resend(resends, &exp->exp_obd->u.cli)) {
1690 CERROR("%s: too many resend retries for object: "
1691 ""DOSTID", rc = %d.\n", exp->exp_obd->obd_name,
1692 POSTID(&oa->o_oi), rc);
1696 exp->exp_obd->u.cli.cl_import->imp_generation) {
1697 CDEBUG(D_HA, "%s: resend cross eviction for object: "
1698 ""DOSTID", rc = %d.\n", exp->exp_obd->obd_name,
1699 POSTID(&oa->o_oi), rc);
1703 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(resends), NULL, NULL,
1705 l_wait_event(waitq, 0, &lwi);
1710 if (rc == -EAGAIN || rc == -EINPROGRESS)
1715 static int osc_brw_redo_request(struct ptlrpc_request *request,
1716 struct osc_brw_async_args *aa, int rc)
1718 struct ptlrpc_request *new_req;
1719 struct osc_brw_async_args *new_aa;
1720 struct osc_async_page *oap;
1723 DEBUG_REQ(rc == -EINPROGRESS ? D_RPCTRACE : D_ERROR, request,
1724 "redo for recoverable error %d", rc);
1726 rc = osc_brw_prep_request(lustre_msg_get_opc(request->rq_reqmsg) ==
1727 OST_WRITE ? OBD_BRW_WRITE :OBD_BRW_READ,
1728 aa->aa_cli, aa->aa_oa,
1729 NULL /* lsm unused by osc currently */,
1730 aa->aa_page_count, aa->aa_ppga,
1731 &new_req, aa->aa_ocapa, 0, 1);
1735 cfs_list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
1736 if (oap->oap_request != NULL) {
1737 LASSERTF(request == oap->oap_request,
1738 "request %p != oap_request %p\n",
1739 request, oap->oap_request);
1740 if (oap->oap_interrupted) {
1741 ptlrpc_req_finished(new_req);
1746 /* New request takes over pga and oaps from old request.
1747 * Note that copying a list_head doesn't work, need to move it... */
1749 new_req->rq_interpret_reply = request->rq_interpret_reply;
1750 new_req->rq_async_args = request->rq_async_args;
1751 /* cap resend delay to the current request timeout, this is similar to
1752 * what ptlrpc does (see after_reply()) */
1753 if (aa->aa_resends > new_req->rq_timeout)
1754 new_req->rq_sent = cfs_time_current_sec() + new_req->rq_timeout;
1756 new_req->rq_sent = cfs_time_current_sec() + aa->aa_resends;
1757 new_req->rq_generation_set = 1;
1758 new_req->rq_import_generation = request->rq_import_generation;
1760 new_aa = ptlrpc_req_async_args(new_req);
1762 CFS_INIT_LIST_HEAD(&new_aa->aa_oaps);
1763 cfs_list_splice_init(&aa->aa_oaps, &new_aa->aa_oaps);
1764 CFS_INIT_LIST_HEAD(&new_aa->aa_exts);
1765 cfs_list_splice_init(&aa->aa_exts, &new_aa->aa_exts);
1766 new_aa->aa_resends = aa->aa_resends;
1768 cfs_list_for_each_entry(oap, &new_aa->aa_oaps, oap_rpc_item) {
1769 if (oap->oap_request) {
1770 ptlrpc_req_finished(oap->oap_request);
1771 oap->oap_request = ptlrpc_request_addref(new_req);
1775 new_aa->aa_ocapa = aa->aa_ocapa;
1776 aa->aa_ocapa = NULL;
1778 /* XXX: This code will run into problem if we're going to support
1779 * to add a series of BRW RPCs into a self-defined ptlrpc_request_set
1780 * and wait for all of them to be finished. We should inherit request
1781 * set from old request. */
1782 ptlrpcd_add_req(new_req, PDL_POLICY_SAME, -1);
1784 DEBUG_REQ(D_INFO, new_req, "new request");
1789 * ugh, we want disk allocation on the target to happen in offset order. we'll
1790 * follow sedgewicks advice and stick to the dead simple shellsort -- it'll do
1791 * fine for our small page arrays and doesn't require allocation. its an
1792 * insertion sort that swaps elements that are strides apart, shrinking the
1793 * stride down until its '1' and the array is sorted.
1795 static void sort_brw_pages(struct brw_page **array, int num)
1798 struct brw_page *tmp;
1802 for (stride = 1; stride < num ; stride = (stride * 3) + 1)
1807 for (i = stride ; i < num ; i++) {
1810 while (j >= stride && array[j - stride]->off > tmp->off) {
1811 array[j] = array[j - stride];
1816 } while (stride > 1);
1819 static obd_count max_unfragmented_pages(struct brw_page **pg, obd_count pages)
1825 LASSERT (pages > 0);
1826 offset = pg[i]->off & ~CFS_PAGE_MASK;
1830 if (pages == 0) /* that's all */
1833 if (offset + pg[i]->count < CFS_PAGE_SIZE)
1834 return count; /* doesn't end on page boundary */
1837 offset = pg[i]->off & ~CFS_PAGE_MASK;
1838 if (offset != 0) /* doesn't start on page boundary */
1845 static struct brw_page **osc_build_ppga(struct brw_page *pga, obd_count count)
1847 struct brw_page **ppga;
1850 OBD_ALLOC(ppga, sizeof(*ppga) * count);
1854 for (i = 0; i < count; i++)
1859 static void osc_release_ppga(struct brw_page **ppga, obd_count count)
1861 LASSERT(ppga != NULL);
1862 OBD_FREE(ppga, sizeof(*ppga) * count);
1865 static int osc_brw(int cmd, struct obd_export *exp, struct obd_info *oinfo,
1866 obd_count page_count, struct brw_page *pga,
1867 struct obd_trans_info *oti)
1869 struct obdo *saved_oa = NULL;
1870 struct brw_page **ppga, **orig;
1871 struct obd_import *imp = class_exp2cliimp(exp);
1872 struct client_obd *cli;
1873 int rc, page_count_orig;
1876 LASSERT((imp != NULL) && (imp->imp_obd != NULL));
1877 cli = &imp->imp_obd->u.cli;
1879 if (cmd & OBD_BRW_CHECK) {
1880 /* The caller just wants to know if there's a chance that this
1881 * I/O can succeed */
1883 if (imp->imp_invalid)
1888 /* test_brw with a failed create can trip this, maybe others. */
1889 LASSERT(cli->cl_max_pages_per_rpc);
1893 orig = ppga = osc_build_ppga(pga, page_count);
1896 page_count_orig = page_count;
1898 sort_brw_pages(ppga, page_count);
1899 while (page_count) {
1900 obd_count pages_per_brw;
1902 if (page_count > cli->cl_max_pages_per_rpc)
1903 pages_per_brw = cli->cl_max_pages_per_rpc;
1905 pages_per_brw = page_count;
1907 pages_per_brw = max_unfragmented_pages(ppga, pages_per_brw);
1909 if (saved_oa != NULL) {
1910 /* restore previously saved oa */
1911 *oinfo->oi_oa = *saved_oa;
1912 } else if (page_count > pages_per_brw) {
1913 /* save a copy of oa (brw will clobber it) */
1914 OBDO_ALLOC(saved_oa);
1915 if (saved_oa == NULL)
1916 GOTO(out, rc = -ENOMEM);
1917 *saved_oa = *oinfo->oi_oa;
1920 rc = osc_brw_internal(cmd, exp, oinfo->oi_oa, oinfo->oi_md,
1921 pages_per_brw, ppga, oinfo->oi_capa);
1926 page_count -= pages_per_brw;
1927 ppga += pages_per_brw;
1931 osc_release_ppga(orig, page_count_orig);
1933 if (saved_oa != NULL)
1934 OBDO_FREE(saved_oa);
1939 static int brw_interpret(const struct lu_env *env,
1940 struct ptlrpc_request *req, void *data, int rc)
1942 struct osc_brw_async_args *aa = data;
1943 struct osc_extent *ext;
1944 struct osc_extent *tmp;
1945 struct cl_object *obj = NULL;
1946 struct client_obd *cli = aa->aa_cli;
1949 rc = osc_brw_fini_request(req, rc);
1950 CDEBUG(D_INODE, "request %p aa %p rc %d\n", req, aa, rc);
1951 /* When server return -EINPROGRESS, client should always retry
1952 * regardless of the number of times the bulk was resent already. */
1953 if (osc_recoverable_error(rc)) {
1954 if (req->rq_import_generation !=
1955 req->rq_import->imp_generation) {
1956 CDEBUG(D_HA, "%s: resend cross eviction for object: "
1957 ""DOSTID", rc = %d.\n",
1958 req->rq_import->imp_obd->obd_name,
1959 POSTID(&aa->aa_oa->o_oi), rc);
1960 } else if (rc == -EINPROGRESS ||
1961 client_should_resend(aa->aa_resends, aa->aa_cli)) {
1962 rc = osc_brw_redo_request(req, aa, rc);
1964 CERROR("%s: too many resent retries for object: "
1965 ""LPU64":"LPU64", rc = %d.\n",
1966 req->rq_import->imp_obd->obd_name,
1967 POSTID(&aa->aa_oa->o_oi), rc);
1972 else if (rc == -EAGAIN || rc == -EINPROGRESS)
1977 capa_put(aa->aa_ocapa);
1978 aa->aa_ocapa = NULL;
1981 cfs_list_for_each_entry_safe(ext, tmp, &aa->aa_exts, oe_link) {
1982 if (obj == NULL && rc == 0) {
1983 obj = osc2cl(ext->oe_obj);
1987 cfs_list_del_init(&ext->oe_link);
1988 osc_extent_finish(env, ext, 1, rc);
1990 LASSERT(cfs_list_empty(&aa->aa_exts));
1991 LASSERT(cfs_list_empty(&aa->aa_oaps));
1994 struct obdo *oa = aa->aa_oa;
1995 struct cl_attr *attr = &osc_env_info(env)->oti_attr;
1996 unsigned long valid = 0;
1999 if (oa->o_valid & OBD_MD_FLBLOCKS) {
2000 attr->cat_blocks = oa->o_blocks;
2001 valid |= CAT_BLOCKS;
2003 if (oa->o_valid & OBD_MD_FLMTIME) {
2004 attr->cat_mtime = oa->o_mtime;
2007 if (oa->o_valid & OBD_MD_FLATIME) {
2008 attr->cat_atime = oa->o_atime;
2011 if (oa->o_valid & OBD_MD_FLCTIME) {
2012 attr->cat_ctime = oa->o_ctime;
2016 cl_object_attr_lock(obj);
2017 cl_object_attr_set(env, obj, attr, valid);
2018 cl_object_attr_unlock(obj);
2020 cl_object_put(env, obj);
2022 OBDO_FREE(aa->aa_oa);
2024 cl_req_completion(env, aa->aa_clerq, rc < 0 ? rc :
2025 req->rq_bulk->bd_nob_transferred);
2026 osc_release_ppga(aa->aa_ppga, aa->aa_page_count);
2027 ptlrpc_lprocfs_brw(req, req->rq_bulk->bd_nob_transferred);
2029 client_obd_list_lock(&cli->cl_loi_list_lock);
2030 /* We need to decrement before osc_ap_completion->osc_wake_cache_waiters
2031 * is called so we know whether to go to sync BRWs or wait for more
2032 * RPCs to complete */
2033 if (lustre_msg_get_opc(req->rq_reqmsg) == OST_WRITE)
2034 cli->cl_w_in_flight--;
2036 cli->cl_r_in_flight--;
2037 osc_wake_cache_waiters(cli);
2038 client_obd_list_unlock(&cli->cl_loi_list_lock);
2040 osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME);
2045 * Build an RPC by the list of extent @ext_list. The caller must ensure
2046 * that the total pages in this list are NOT over max pages per RPC.
2047 * Extents in the list must be in OES_RPC state.
2049 int osc_build_rpc(const struct lu_env *env, struct client_obd *cli,
2050 cfs_list_t *ext_list, int cmd, pdl_policy_t pol)
2052 struct ptlrpc_request *req = NULL;
2053 struct osc_extent *ext;
2054 struct brw_page **pga = NULL;
2055 struct osc_brw_async_args *aa = NULL;
2056 struct obdo *oa = NULL;
2057 struct osc_async_page *oap;
2058 struct osc_async_page *tmp;
2059 struct cl_req *clerq = NULL;
2060 enum cl_req_type crt = (cmd & OBD_BRW_WRITE) ? CRT_WRITE :
2062 struct ldlm_lock *lock = NULL;
2063 struct cl_req_attr *crattr = NULL;
2064 obd_off starting_offset = OBD_OBJECT_EOF;
2065 obd_off ending_offset = 0;
2071 CFS_LIST_HEAD(rpc_list);
2074 LASSERT(!cfs_list_empty(ext_list));
2076 /* add pages into rpc_list to build BRW rpc */
2077 cfs_list_for_each_entry(ext, ext_list, oe_link) {
2078 LASSERT(ext->oe_state == OES_RPC);
2079 mem_tight |= ext->oe_memalloc;
2080 cfs_list_for_each_entry(oap, &ext->oe_pages, oap_pending_item) {
2082 cfs_list_add_tail(&oap->oap_rpc_item, &rpc_list);
2083 if (starting_offset > oap->oap_obj_off)
2084 starting_offset = oap->oap_obj_off;
2086 LASSERT(oap->oap_page_off == 0);
2087 if (ending_offset < oap->oap_obj_off + oap->oap_count)
2088 ending_offset = oap->oap_obj_off +
2091 LASSERT(oap->oap_page_off + oap->oap_count ==
2097 mpflag = cfs_memory_pressure_get_and_set();
2099 OBD_ALLOC(crattr, sizeof(*crattr));
2101 GOTO(out, rc = -ENOMEM);
2103 OBD_ALLOC(pga, sizeof(*pga) * page_count);
2105 GOTO(out, rc = -ENOMEM);
2109 GOTO(out, rc = -ENOMEM);
2112 cfs_list_for_each_entry(oap, &rpc_list, oap_rpc_item) {
2113 struct cl_page *page = oap2cl_page(oap);
2114 if (clerq == NULL) {
2115 clerq = cl_req_alloc(env, page, crt,
2116 1 /* only 1-object rpcs for now */);
2118 GOTO(out, rc = PTR_ERR(clerq));
2119 lock = oap->oap_ldlm_lock;
2122 oap->oap_brw_flags |= OBD_BRW_MEMALLOC;
2123 pga[i] = &oap->oap_brw_page;
2124 pga[i]->off = oap->oap_obj_off + oap->oap_page_off;
2125 CDEBUG(0, "put page %p index %lu oap %p flg %x to pga\n",
2126 pga[i]->pg, cfs_page_index(oap->oap_page), oap,
2129 cl_req_page_add(env, clerq, page);
2132 /* always get the data for the obdo for the rpc */
2133 LASSERT(clerq != NULL);
2134 crattr->cra_oa = oa;
2135 cl_req_attr_set(env, clerq, crattr, ~0ULL);
2137 oa->o_handle = lock->l_remote_handle;
2138 oa->o_valid |= OBD_MD_FLHANDLE;
2141 rc = cl_req_prep(env, clerq);
2143 CERROR("cl_req_prep failed: %d\n", rc);
2147 sort_brw_pages(pga, page_count);
2148 rc = osc_brw_prep_request(cmd, cli, oa, NULL, page_count,
2149 pga, &req, crattr->cra_capa, 1, 0);
2151 CERROR("prep_req failed: %d\n", rc);
2155 req->rq_interpret_reply = brw_interpret;
2157 req->rq_memalloc = 1;
2159 /* Need to update the timestamps after the request is built in case
2160 * we race with setattr (locally or in queue at OST). If OST gets
2161 * later setattr before earlier BRW (as determined by the request xid),
2162 * the OST will not use BRW timestamps. Sadly, there is no obvious
2163 * way to do this in a single call. bug 10150 */
2164 cl_req_attr_set(env, clerq, crattr,
2165 OBD_MD_FLMTIME|OBD_MD_FLCTIME|OBD_MD_FLATIME);
2167 lustre_msg_set_jobid(req->rq_reqmsg, crattr->cra_jobid);
2169 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
2170 aa = ptlrpc_req_async_args(req);
2171 CFS_INIT_LIST_HEAD(&aa->aa_oaps);
2172 cfs_list_splice_init(&rpc_list, &aa->aa_oaps);
2173 CFS_INIT_LIST_HEAD(&aa->aa_exts);
2174 cfs_list_splice_init(ext_list, &aa->aa_exts);
2175 aa->aa_clerq = clerq;
2177 /* queued sync pages can be torn down while the pages
2178 * were between the pending list and the rpc */
2180 cfs_list_for_each_entry(oap, &aa->aa_oaps, oap_rpc_item) {
2181 /* only one oap gets a request reference */
2184 if (oap->oap_interrupted && !req->rq_intr) {
2185 CDEBUG(D_INODE, "oap %p in req %p interrupted\n",
2187 ptlrpc_mark_interrupted(req);
2191 tmp->oap_request = ptlrpc_request_addref(req);
2193 client_obd_list_lock(&cli->cl_loi_list_lock);
2194 starting_offset >>= CFS_PAGE_SHIFT;
2195 if (cmd == OBD_BRW_READ) {
2196 cli->cl_r_in_flight++;
2197 lprocfs_oh_tally_log2(&cli->cl_read_page_hist, page_count);
2198 lprocfs_oh_tally(&cli->cl_read_rpc_hist, cli->cl_r_in_flight);
2199 lprocfs_oh_tally_log2(&cli->cl_read_offset_hist,
2200 starting_offset + 1);
2202 cli->cl_w_in_flight++;
2203 lprocfs_oh_tally_log2(&cli->cl_write_page_hist, page_count);
2204 lprocfs_oh_tally(&cli->cl_write_rpc_hist, cli->cl_w_in_flight);
2205 lprocfs_oh_tally_log2(&cli->cl_write_offset_hist,
2206 starting_offset + 1);
2208 client_obd_list_unlock(&cli->cl_loi_list_lock);
2210 DEBUG_REQ(D_INODE, req, "%d pages, aa %p. now %dr/%dw in flight",
2211 page_count, aa, cli->cl_r_in_flight,
2212 cli->cl_w_in_flight);
2214 /* XXX: Maybe the caller can check the RPC bulk descriptor to
2215 * see which CPU/NUMA node the majority of pages were allocated
2216 * on, and try to assign the async RPC to the CPU core
2217 * (PDL_POLICY_PREFERRED) to reduce cross-CPU memory traffic.
2219 * But on the other hand, we expect that multiple ptlrpcd
2220 * threads and the initial write sponsor can run in parallel,
2221 * especially when data checksum is enabled, which is CPU-bound
2222 * operation and single ptlrpcd thread cannot process in time.
2223 * So more ptlrpcd threads sharing BRW load
2224 * (with PDL_POLICY_ROUND) seems better.
2226 ptlrpcd_add_req(req, pol, -1);
2232 cfs_memory_pressure_restore(mpflag);
2234 if (crattr != NULL) {
2235 capa_put(crattr->cra_capa);
2236 OBD_FREE(crattr, sizeof(*crattr));
2240 LASSERT(req == NULL);
2245 OBD_FREE(pga, sizeof(*pga) * page_count);
2246 /* this should happen rarely and is pretty bad, it makes the
2247 * pending list not follow the dirty order */
2248 while (!cfs_list_empty(ext_list)) {
2249 ext = cfs_list_entry(ext_list->next, struct osc_extent,
2251 cfs_list_del_init(&ext->oe_link);
2252 osc_extent_finish(env, ext, 0, rc);
2254 if (clerq && !IS_ERR(clerq))
2255 cl_req_completion(env, clerq, rc);
2260 static int osc_set_lock_data_with_check(struct ldlm_lock *lock,
2261 struct ldlm_enqueue_info *einfo)
2263 void *data = einfo->ei_cbdata;
2266 LASSERT(lock != NULL);
2267 LASSERT(lock->l_blocking_ast == einfo->ei_cb_bl);
2268 LASSERT(lock->l_resource->lr_type == einfo->ei_type);
2269 LASSERT(lock->l_completion_ast == einfo->ei_cb_cp);
2270 LASSERT(lock->l_glimpse_ast == einfo->ei_cb_gl);
2272 lock_res_and_lock(lock);
2273 spin_lock(&osc_ast_guard);
2275 if (lock->l_ast_data == NULL)
2276 lock->l_ast_data = data;
2277 if (lock->l_ast_data == data)
2280 spin_unlock(&osc_ast_guard);
2281 unlock_res_and_lock(lock);
2286 static int osc_set_data_with_check(struct lustre_handle *lockh,
2287 struct ldlm_enqueue_info *einfo)
2289 struct ldlm_lock *lock = ldlm_handle2lock(lockh);
2293 set = osc_set_lock_data_with_check(lock, einfo);
2294 LDLM_LOCK_PUT(lock);
2296 CERROR("lockh %p, data %p - client evicted?\n",
2297 lockh, einfo->ei_cbdata);
2301 static int osc_change_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
2302 ldlm_iterator_t replace, void *data)
2304 struct ldlm_res_id res_id;
2305 struct obd_device *obd = class_exp2obd(exp);
2307 ostid_build_res_name(&lsm->lsm_oi, &res_id);
2308 ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
2312 /* find any ldlm lock of the inode in osc
2316 static int osc_find_cbdata(struct obd_export *exp, struct lov_stripe_md *lsm,
2317 ldlm_iterator_t replace, void *data)
2319 struct ldlm_res_id res_id;
2320 struct obd_device *obd = class_exp2obd(exp);
2323 ostid_build_res_name(&lsm->lsm_oi, &res_id);
2324 rc = ldlm_resource_iterate(obd->obd_namespace, &res_id, replace, data);
2325 if (rc == LDLM_ITER_STOP)
2327 if (rc == LDLM_ITER_CONTINUE)
2332 static int osc_enqueue_fini(struct ptlrpc_request *req, struct ost_lvb *lvb,
2333 obd_enqueue_update_f upcall, void *cookie,
2334 __u64 *flags, int agl, int rc)
2336 int intent = *flags & LDLM_FL_HAS_INTENT;
2340 /* The request was created before ldlm_cli_enqueue call. */
2341 if (rc == ELDLM_LOCK_ABORTED) {
2342 struct ldlm_reply *rep;
2343 rep = req_capsule_server_get(&req->rq_pill,
2346 LASSERT(rep != NULL);
2347 if (rep->lock_policy_res1)
2348 rc = rep->lock_policy_res1;
2352 if ((intent != 0 && rc == ELDLM_LOCK_ABORTED && agl == 0) ||
2354 *flags |= LDLM_FL_LVB_READY;
2355 CDEBUG(D_INODE,"got kms "LPU64" blocks "LPU64" mtime "LPU64"\n",
2356 lvb->lvb_size, lvb->lvb_blocks, lvb->lvb_mtime);
2359 /* Call the update callback. */
2360 rc = (*upcall)(cookie, rc);
2364 static int osc_enqueue_interpret(const struct lu_env *env,
2365 struct ptlrpc_request *req,
2366 struct osc_enqueue_args *aa, int rc)
2368 struct ldlm_lock *lock;
2369 struct lustre_handle handle;
2371 struct ost_lvb *lvb;
2373 __u64 *flags = aa->oa_flags;
2375 /* Make a local copy of a lock handle and a mode, because aa->oa_*
2376 * might be freed anytime after lock upcall has been called. */
2377 lustre_handle_copy(&handle, aa->oa_lockh);
2378 mode = aa->oa_ei->ei_mode;
2380 /* ldlm_cli_enqueue is holding a reference on the lock, so it must
2382 lock = ldlm_handle2lock(&handle);
2384 /* Take an additional reference so that a blocking AST that
2385 * ldlm_cli_enqueue_fini() might post for a failed lock, is guaranteed
2386 * to arrive after an upcall has been executed by
2387 * osc_enqueue_fini(). */
2388 ldlm_lock_addref(&handle, mode);
2390 /* Let CP AST to grant the lock first. */
2391 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_ENQ_RACE, 1);
2393 if (aa->oa_agl && rc == ELDLM_LOCK_ABORTED) {
2398 lvb_len = sizeof(*aa->oa_lvb);
2401 /* Complete obtaining the lock procedure. */
2402 rc = ldlm_cli_enqueue_fini(aa->oa_exp, req, aa->oa_ei->ei_type, 1,
2403 mode, flags, lvb, lvb_len, &handle, rc);
2404 /* Complete osc stuff. */
2405 rc = osc_enqueue_fini(req, aa->oa_lvb, aa->oa_upcall, aa->oa_cookie,
2406 flags, aa->oa_agl, rc);
2408 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_CP_CANCEL_RACE, 10);
2410 /* Release the lock for async request. */
2411 if (lustre_handle_is_used(&handle) && rc == ELDLM_OK)
2413 * Releases a reference taken by ldlm_cli_enqueue(), if it is
2414 * not already released by
2415 * ldlm_cli_enqueue_fini()->failed_lock_cleanup()
2417 ldlm_lock_decref(&handle, mode);
2419 LASSERTF(lock != NULL, "lockh %p, req %p, aa %p - client evicted?\n",
2420 aa->oa_lockh, req, aa);
2421 ldlm_lock_decref(&handle, mode);
2422 LDLM_LOCK_PUT(lock);
2426 void osc_update_enqueue(struct lustre_handle *lov_lockhp,
2427 struct lov_oinfo *loi, int flags,
2428 struct ost_lvb *lvb, __u32 mode, int rc)
2430 struct ldlm_lock *lock = ldlm_handle2lock(lov_lockhp);
2432 if (rc == ELDLM_OK) {
2435 LASSERT(lock != NULL);
2436 loi->loi_lvb = *lvb;
2437 tmp = loi->loi_lvb.lvb_size;
2438 /* Extend KMS up to the end of this lock and no further
2439 * A lock on [x,y] means a KMS of up to y + 1 bytes! */
2440 if (tmp > lock->l_policy_data.l_extent.end)
2441 tmp = lock->l_policy_data.l_extent.end + 1;
2442 if (tmp >= loi->loi_kms) {
2443 LDLM_DEBUG(lock, "lock acquired, setting rss="LPU64
2444 ", kms="LPU64, loi->loi_lvb.lvb_size, tmp);
2445 loi_kms_set(loi, tmp);
2447 LDLM_DEBUG(lock, "lock acquired, setting rss="
2448 LPU64"; leaving kms="LPU64", end="LPU64,
2449 loi->loi_lvb.lvb_size, loi->loi_kms,
2450 lock->l_policy_data.l_extent.end);
2452 ldlm_lock_allow_match(lock);
2453 } else if (rc == ELDLM_LOCK_ABORTED && (flags & LDLM_FL_HAS_INTENT)) {
2454 LASSERT(lock != NULL);
2455 loi->loi_lvb = *lvb;
2456 ldlm_lock_allow_match(lock);
2457 CDEBUG(D_INODE, "glimpsed, setting rss="LPU64"; leaving"
2458 " kms="LPU64"\n", loi->loi_lvb.lvb_size, loi->loi_kms);
2464 ldlm_lock_fail_match(lock);
2466 LDLM_LOCK_PUT(lock);
2469 EXPORT_SYMBOL(osc_update_enqueue);
2471 struct ptlrpc_request_set *PTLRPCD_SET = (void *)1;
2473 /* When enqueuing asynchronously, locks are not ordered, we can obtain a lock
2474 * from the 2nd OSC before a lock from the 1st one. This does not deadlock with
2475 * other synchronous requests, however keeping some locks and trying to obtain
2476 * others may take a considerable amount of time in a case of ost failure; and
2477 * when other sync requests do not get released lock from a client, the client
2478 * is excluded from the cluster -- such scenarious make the life difficult, so
2479 * release locks just after they are obtained. */
2480 int osc_enqueue_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2481 __u64 *flags, ldlm_policy_data_t *policy,
2482 struct ost_lvb *lvb, int kms_valid,
2483 obd_enqueue_update_f upcall, void *cookie,
2484 struct ldlm_enqueue_info *einfo,
2485 struct lustre_handle *lockh,
2486 struct ptlrpc_request_set *rqset, int async, int agl)
2488 struct obd_device *obd = exp->exp_obd;
2489 struct ptlrpc_request *req = NULL;
2490 int intent = *flags & LDLM_FL_HAS_INTENT;
2491 int match_lvb = (agl != 0 ? 0 : LDLM_FL_LVB_READY);
2496 /* Filesystem lock extents are extended to page boundaries so that
2497 * dealing with the page cache is a little smoother. */
2498 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2499 policy->l_extent.end |= ~CFS_PAGE_MASK;
2502 * kms is not valid when either object is completely fresh (so that no
2503 * locks are cached), or object was evicted. In the latter case cached
2504 * lock cannot be used, because it would prime inode state with
2505 * potentially stale LVB.
2510 /* Next, search for already existing extent locks that will cover us */
2511 /* If we're trying to read, we also search for an existing PW lock. The
2512 * VFS and page cache already protect us locally, so lots of readers/
2513 * writers can share a single PW lock.
2515 * There are problems with conversion deadlocks, so instead of
2516 * converting a read lock to a write lock, we'll just enqueue a new
2519 * At some point we should cancel the read lock instead of making them
2520 * send us a blocking callback, but there are problems with canceling
2521 * locks out from other users right now, too. */
2522 mode = einfo->ei_mode;
2523 if (einfo->ei_mode == LCK_PR)
2525 mode = ldlm_lock_match(obd->obd_namespace, *flags | match_lvb, res_id,
2526 einfo->ei_type, policy, mode, lockh, 0);
2528 struct ldlm_lock *matched = ldlm_handle2lock(lockh);
2530 if ((agl != 0) && !(matched->l_flags & LDLM_FL_LVB_READY)) {
2531 /* For AGL, if enqueue RPC is sent but the lock is not
2532 * granted, then skip to process this strpe.
2533 * Return -ECANCELED to tell the caller. */
2534 ldlm_lock_decref(lockh, mode);
2535 LDLM_LOCK_PUT(matched);
2537 } else if (osc_set_lock_data_with_check(matched, einfo)) {
2538 *flags |= LDLM_FL_LVB_READY;
2539 /* addref the lock only if not async requests and PW
2540 * lock is matched whereas we asked for PR. */
2541 if (!rqset && einfo->ei_mode != mode)
2542 ldlm_lock_addref(lockh, LCK_PR);
2544 /* I would like to be able to ASSERT here that
2545 * rss <= kms, but I can't, for reasons which
2546 * are explained in lov_enqueue() */
2549 /* We already have a lock, and it's referenced.
2551 * At this point, the cl_lock::cll_state is CLS_QUEUING,
2552 * AGL upcall may change it to CLS_HELD directly. */
2553 (*upcall)(cookie, ELDLM_OK);
2555 if (einfo->ei_mode != mode)
2556 ldlm_lock_decref(lockh, LCK_PW);
2558 /* For async requests, decref the lock. */
2559 ldlm_lock_decref(lockh, einfo->ei_mode);
2560 LDLM_LOCK_PUT(matched);
2563 ldlm_lock_decref(lockh, mode);
2564 LDLM_LOCK_PUT(matched);
2570 CFS_LIST_HEAD(cancels);
2571 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
2572 &RQF_LDLM_ENQUEUE_LVB);
2576 rc = ldlm_prep_enqueue_req(exp, req, &cancels, 0);
2578 ptlrpc_request_free(req);
2582 req_capsule_set_size(&req->rq_pill, &RMF_DLM_LVB, RCL_SERVER,
2584 ptlrpc_request_set_replen(req);
2587 /* users of osc_enqueue() can pass this flag for ldlm_lock_match() */
2588 *flags &= ~LDLM_FL_BLOCK_GRANTED;
2590 rc = ldlm_cli_enqueue(exp, &req, einfo, res_id, policy, flags, lvb,
2591 sizeof(*lvb), LVB_T_OST, lockh, async);
2594 struct osc_enqueue_args *aa;
2595 CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
2596 aa = ptlrpc_req_async_args(req);
2599 aa->oa_flags = flags;
2600 aa->oa_upcall = upcall;
2601 aa->oa_cookie = cookie;
2603 aa->oa_lockh = lockh;
2606 req->rq_interpret_reply =
2607 (ptlrpc_interpterer_t)osc_enqueue_interpret;
2608 if (rqset == PTLRPCD_SET)
2609 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
2611 ptlrpc_set_add_req(rqset, req);
2612 } else if (intent) {
2613 ptlrpc_req_finished(req);
2618 rc = osc_enqueue_fini(req, lvb, upcall, cookie, flags, agl, rc);
2620 ptlrpc_req_finished(req);
2625 static int osc_enqueue(struct obd_export *exp, struct obd_info *oinfo,
2626 struct ldlm_enqueue_info *einfo,
2627 struct ptlrpc_request_set *rqset)
2629 struct ldlm_res_id res_id;
2633 ostid_build_res_name(&oinfo->oi_md->lsm_oi, &res_id);
2634 rc = osc_enqueue_base(exp, &res_id, &oinfo->oi_flags, &oinfo->oi_policy,
2635 &oinfo->oi_md->lsm_oinfo[0]->loi_lvb,
2636 oinfo->oi_md->lsm_oinfo[0]->loi_kms_valid,
2637 oinfo->oi_cb_up, oinfo, einfo, oinfo->oi_lockh,
2638 rqset, rqset != NULL, 0);
2642 int osc_match_base(struct obd_export *exp, struct ldlm_res_id *res_id,
2643 __u32 type, ldlm_policy_data_t *policy, __u32 mode,
2644 int *flags, void *data, struct lustre_handle *lockh,
2647 struct obd_device *obd = exp->exp_obd;
2648 int lflags = *flags;
2652 if (OBD_FAIL_CHECK(OBD_FAIL_OSC_MATCH))
2655 /* Filesystem lock extents are extended to page boundaries so that
2656 * dealing with the page cache is a little smoother */
2657 policy->l_extent.start -= policy->l_extent.start & ~CFS_PAGE_MASK;
2658 policy->l_extent.end |= ~CFS_PAGE_MASK;
2660 /* Next, search for already existing extent locks that will cover us */
2661 /* If we're trying to read, we also search for an existing PW lock. The
2662 * VFS and page cache already protect us locally, so lots of readers/
2663 * writers can share a single PW lock. */
2667 rc = ldlm_lock_match(obd->obd_namespace, lflags,
2668 res_id, type, policy, rc, lockh, unref);
2671 if (!osc_set_data_with_check(lockh, data)) {
2672 if (!(lflags & LDLM_FL_TEST_LOCK))
2673 ldlm_lock_decref(lockh, rc);
2677 if (!(lflags & LDLM_FL_TEST_LOCK) && mode != rc) {
2678 ldlm_lock_addref(lockh, LCK_PR);
2679 ldlm_lock_decref(lockh, LCK_PW);
2686 int osc_cancel_base(struct lustre_handle *lockh, __u32 mode)
2690 if (unlikely(mode == LCK_GROUP))
2691 ldlm_lock_decref_and_cancel(lockh, mode);
2693 ldlm_lock_decref(lockh, mode);
2698 static int osc_cancel(struct obd_export *exp, struct lov_stripe_md *md,
2699 __u32 mode, struct lustre_handle *lockh)
2702 RETURN(osc_cancel_base(lockh, mode));
2705 static int osc_cancel_unused(struct obd_export *exp,
2706 struct lov_stripe_md *lsm,
2707 ldlm_cancel_flags_t flags,
2710 struct obd_device *obd = class_exp2obd(exp);
2711 struct ldlm_res_id res_id, *resp = NULL;
2714 ostid_build_res_name(&lsm->lsm_oi, &res_id);
2718 return ldlm_cli_cancel_unused(obd->obd_namespace, resp, flags, opaque);
2721 static int osc_statfs_interpret(const struct lu_env *env,
2722 struct ptlrpc_request *req,
2723 struct osc_async_args *aa, int rc)
2725 struct obd_statfs *msfs;
2729 /* The request has in fact never been sent
2730 * due to issues at a higher level (LOV).
2731 * Exit immediately since the caller is
2732 * aware of the problem and takes care
2733 * of the clean up */
2736 if ((rc == -ENOTCONN || rc == -EAGAIN) &&
2737 (aa->aa_oi->oi_flags & OBD_STATFS_NODELAY))
2743 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2745 GOTO(out, rc = -EPROTO);
2748 *aa->aa_oi->oi_osfs = *msfs;
2750 rc = aa->aa_oi->oi_cb_up(aa->aa_oi, rc);
2754 static int osc_statfs_async(struct obd_export *exp,
2755 struct obd_info *oinfo, __u64 max_age,
2756 struct ptlrpc_request_set *rqset)
2758 struct obd_device *obd = class_exp2obd(exp);
2759 struct ptlrpc_request *req;
2760 struct osc_async_args *aa;
2764 /* We could possibly pass max_age in the request (as an absolute
2765 * timestamp or a "seconds.usec ago") so the target can avoid doing
2766 * extra calls into the filesystem if that isn't necessary (e.g.
2767 * during mount that would help a bit). Having relative timestamps
2768 * is not so great if request processing is slow, while absolute
2769 * timestamps are not ideal because they need time synchronization. */
2770 req = ptlrpc_request_alloc(obd->u.cli.cl_import, &RQF_OST_STATFS);
2774 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2776 ptlrpc_request_free(req);
2779 ptlrpc_request_set_replen(req);
2780 req->rq_request_portal = OST_CREATE_PORTAL;
2781 ptlrpc_at_set_req_timeout(req);
2783 if (oinfo->oi_flags & OBD_STATFS_NODELAY) {
2784 /* procfs requests not want stat in wait for avoid deadlock */
2785 req->rq_no_resend = 1;
2786 req->rq_no_delay = 1;
2789 req->rq_interpret_reply = (ptlrpc_interpterer_t)osc_statfs_interpret;
2790 CLASSERT (sizeof(*aa) <= sizeof(req->rq_async_args));
2791 aa = ptlrpc_req_async_args(req);
2794 ptlrpc_set_add_req(rqset, req);
2798 static int osc_statfs(const struct lu_env *env, struct obd_export *exp,
2799 struct obd_statfs *osfs, __u64 max_age, __u32 flags)
2801 struct obd_device *obd = class_exp2obd(exp);
2802 struct obd_statfs *msfs;
2803 struct ptlrpc_request *req;
2804 struct obd_import *imp = NULL;
2808 /*Since the request might also come from lprocfs, so we need
2809 *sync this with client_disconnect_export Bug15684*/
2810 down_read(&obd->u.cli.cl_sem);
2811 if (obd->u.cli.cl_import)
2812 imp = class_import_get(obd->u.cli.cl_import);
2813 up_read(&obd->u.cli.cl_sem);
2817 /* We could possibly pass max_age in the request (as an absolute
2818 * timestamp or a "seconds.usec ago") so the target can avoid doing
2819 * extra calls into the filesystem if that isn't necessary (e.g.
2820 * during mount that would help a bit). Having relative timestamps
2821 * is not so great if request processing is slow, while absolute
2822 * timestamps are not ideal because they need time synchronization. */
2823 req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
2825 class_import_put(imp);
2830 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
2832 ptlrpc_request_free(req);
2835 ptlrpc_request_set_replen(req);
2836 req->rq_request_portal = OST_CREATE_PORTAL;
2837 ptlrpc_at_set_req_timeout(req);
2839 if (flags & OBD_STATFS_NODELAY) {
2840 /* procfs requests not want stat in wait for avoid deadlock */
2841 req->rq_no_resend = 1;
2842 req->rq_no_delay = 1;
2845 rc = ptlrpc_queue_wait(req);
2849 msfs = req_capsule_server_get(&req->rq_pill, &RMF_OBD_STATFS);
2851 GOTO(out, rc = -EPROTO);
2858 ptlrpc_req_finished(req);
2862 /* Retrieve object striping information.
2864 * @lmmu is a pointer to an in-core struct with lmm_ost_count indicating
2865 * the maximum number of OST indices which will fit in the user buffer.
2866 * lmm_magic must be LOV_MAGIC (we only use 1 slot here).
2868 static int osc_getstripe(struct lov_stripe_md *lsm, struct lov_user_md *lump)
2870 /* we use lov_user_md_v3 because it is larger than lov_user_md_v1 */
2871 struct lov_user_md_v3 lum, *lumk;
2872 struct lov_user_ost_data_v1 *lmm_objects;
2873 int rc = 0, lum_size;
2879 /* we only need the header part from user space to get lmm_magic and
2880 * lmm_stripe_count, (the header part is common to v1 and v3) */
2881 lum_size = sizeof(struct lov_user_md_v1);
2882 if (cfs_copy_from_user(&lum, lump, lum_size))
2885 if ((lum.lmm_magic != LOV_USER_MAGIC_V1) &&
2886 (lum.lmm_magic != LOV_USER_MAGIC_V3))
2889 /* lov_user_md_vX and lov_mds_md_vX must have the same size */
2890 LASSERT(sizeof(struct lov_user_md_v1) == sizeof(struct lov_mds_md_v1));
2891 LASSERT(sizeof(struct lov_user_md_v3) == sizeof(struct lov_mds_md_v3));
2892 LASSERT(sizeof(lum.lmm_objects[0]) == sizeof(lumk->lmm_objects[0]));
2894 /* we can use lov_mds_md_size() to compute lum_size
2895 * because lov_user_md_vX and lov_mds_md_vX have the same size */
2896 if (lum.lmm_stripe_count > 0) {
2897 lum_size = lov_mds_md_size(lum.lmm_stripe_count, lum.lmm_magic);
2898 OBD_ALLOC(lumk, lum_size);
2902 if (lum.lmm_magic == LOV_USER_MAGIC_V1)
2904 &(((struct lov_user_md_v1 *)lumk)->lmm_objects[0]);
2906 lmm_objects = &(lumk->lmm_objects[0]);
2907 lmm_objects->l_ost_oi = lsm->lsm_oi;
2909 lum_size = lov_mds_md_size(0, lum.lmm_magic);
2913 lumk->lmm_oi = lsm->lsm_oi;
2914 lumk->lmm_stripe_count = 1;
2916 if (cfs_copy_to_user(lump, lumk, lum_size))
2920 OBD_FREE(lumk, lum_size);
2926 static int osc_iocontrol(unsigned int cmd, struct obd_export *exp, int len,
2927 void *karg, void *uarg)
2929 struct obd_device *obd = exp->exp_obd;
2930 struct obd_ioctl_data *data = karg;
2934 if (!cfs_try_module_get(THIS_MODULE)) {
2935 CERROR("Can't get module. Is it alive?");
2939 case OBD_IOC_LOV_GET_CONFIG: {
2941 struct lov_desc *desc;
2942 struct obd_uuid uuid;
2946 if (obd_ioctl_getdata(&buf, &len, (void *)uarg))
2947 GOTO(out, err = -EINVAL);
2949 data = (struct obd_ioctl_data *)buf;
2951 if (sizeof(*desc) > data->ioc_inllen1) {
2952 obd_ioctl_freedata(buf, len);
2953 GOTO(out, err = -EINVAL);
2956 if (data->ioc_inllen2 < sizeof(uuid)) {
2957 obd_ioctl_freedata(buf, len);
2958 GOTO(out, err = -EINVAL);
2961 desc = (struct lov_desc *)data->ioc_inlbuf1;
2962 desc->ld_tgt_count = 1;
2963 desc->ld_active_tgt_count = 1;
2964 desc->ld_default_stripe_count = 1;
2965 desc->ld_default_stripe_size = 0;
2966 desc->ld_default_stripe_offset = 0;
2967 desc->ld_pattern = 0;
2968 memcpy(&desc->ld_uuid, &obd->obd_uuid, sizeof(uuid));
2970 memcpy(data->ioc_inlbuf2, &obd->obd_uuid, sizeof(uuid));
2972 err = cfs_copy_to_user((void *)uarg, buf, len);
2975 obd_ioctl_freedata(buf, len);
2978 case LL_IOC_LOV_SETSTRIPE:
2979 err = obd_alloc_memmd(exp, karg);
2983 case LL_IOC_LOV_GETSTRIPE:
2984 err = osc_getstripe(karg, uarg);
2986 case OBD_IOC_CLIENT_RECOVER:
2987 err = ptlrpc_recover_import(obd->u.cli.cl_import,
2988 data->ioc_inlbuf1, 0);
2992 case IOC_OSC_SET_ACTIVE:
2993 err = ptlrpc_set_import_active(obd->u.cli.cl_import,
2996 case OBD_IOC_POLL_QUOTACHECK:
2997 err = osc_quota_poll_check(exp, (struct if_quotacheck *)karg);
2999 case OBD_IOC_PING_TARGET:
3000 err = ptlrpc_obd_ping(obd);
3003 CDEBUG(D_INODE, "unrecognised ioctl %#x by %s\n",
3004 cmd, cfs_curproc_comm());
3005 GOTO(out, err = -ENOTTY);
3008 cfs_module_put(THIS_MODULE);
3012 static int osc_get_info(const struct lu_env *env, struct obd_export *exp,
3013 obd_count keylen, void *key, __u32 *vallen, void *val,
3014 struct lov_stripe_md *lsm)
3017 if (!vallen || !val)
3020 if (KEY_IS(KEY_LOCK_TO_STRIPE)) {
3021 __u32 *stripe = val;
3022 *vallen = sizeof(*stripe);
3025 } else if (KEY_IS(KEY_LAST_ID)) {
3026 struct ptlrpc_request *req;
3031 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
3032 &RQF_OST_GET_INFO_LAST_ID);
3036 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
3037 RCL_CLIENT, keylen);
3038 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
3040 ptlrpc_request_free(req);
3044 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
3045 memcpy(tmp, key, keylen);
3047 req->rq_no_delay = req->rq_no_resend = 1;
3048 ptlrpc_request_set_replen(req);
3049 rc = ptlrpc_queue_wait(req);
3053 reply = req_capsule_server_get(&req->rq_pill, &RMF_OBD_ID);
3055 GOTO(out, rc = -EPROTO);
3057 *((obd_id *)val) = *reply;
3059 ptlrpc_req_finished(req);
3061 } else if (KEY_IS(KEY_FIEMAP)) {
3062 struct ptlrpc_request *req;
3063 struct ll_user_fiemap *reply;
3067 req = ptlrpc_request_alloc(class_exp2cliimp(exp),
3068 &RQF_OST_GET_INFO_FIEMAP);
3072 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_KEY,
3073 RCL_CLIENT, keylen);
3074 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
3075 RCL_CLIENT, *vallen);
3076 req_capsule_set_size(&req->rq_pill, &RMF_FIEMAP_VAL,
3077 RCL_SERVER, *vallen);
3079 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_GET_INFO);
3081 ptlrpc_request_free(req);
3085 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_KEY);
3086 memcpy(tmp, key, keylen);
3087 tmp = req_capsule_client_get(&req->rq_pill, &RMF_FIEMAP_VAL);
3088 memcpy(tmp, val, *vallen);
3090 ptlrpc_request_set_replen(req);
3091 rc = ptlrpc_queue_wait(req);
3095 reply = req_capsule_server_get(&req->rq_pill, &RMF_FIEMAP_VAL);
3097 GOTO(out1, rc = -EPROTO);
3099 memcpy(val, reply, *vallen);
3101 ptlrpc_req_finished(req);
3109 static int osc_set_info_async(const struct lu_env *env, struct obd_export *exp,
3110 obd_count keylen, void *key, obd_count vallen,
3111 void *val, struct ptlrpc_request_set *set)
3113 struct ptlrpc_request *req;
3114 struct obd_device *obd = exp->exp_obd;
3115 struct obd_import *imp = class_exp2cliimp(exp);
3120 OBD_FAIL_TIMEOUT(OBD_FAIL_OSC_SHUTDOWN, 10);
3122 if (KEY_IS(KEY_CHECKSUM)) {
3123 if (vallen != sizeof(int))
3125 exp->exp_obd->u.cli.cl_checksum = (*(int *)val) ? 1 : 0;
3129 if (KEY_IS(KEY_SPTLRPC_CONF)) {
3130 sptlrpc_conf_client_adapt(obd);
3134 if (KEY_IS(KEY_FLUSH_CTX)) {
3135 sptlrpc_import_flush_my_ctx(imp);
3139 if (KEY_IS(KEY_CACHE_SET)) {
3140 struct client_obd *cli = &obd->u.cli;
3142 LASSERT(cli->cl_cache == NULL); /* only once */
3143 cli->cl_cache = (struct cl_client_cache *)val;
3144 cfs_atomic_inc(&cli->cl_cache->ccc_users);
3145 cli->cl_lru_left = &cli->cl_cache->ccc_lru_left;
3147 /* add this osc into entity list */
3148 LASSERT(cfs_list_empty(&cli->cl_lru_osc));
3149 spin_lock(&cli->cl_cache->ccc_lru_lock);
3150 cfs_list_add(&cli->cl_lru_osc, &cli->cl_cache->ccc_lru);
3151 spin_unlock(&cli->cl_cache->ccc_lru_lock);
3156 if (KEY_IS(KEY_CACHE_LRU_SHRINK)) {
3157 struct client_obd *cli = &obd->u.cli;
3158 int nr = cfs_atomic_read(&cli->cl_lru_in_list) >> 1;
3159 int target = *(int *)val;
3161 nr = osc_lru_shrink(cli, min(nr, target));
3166 if (!set && !KEY_IS(KEY_GRANT_SHRINK))
3169 /* We pass all other commands directly to OST. Since nobody calls osc
3170 methods directly and everybody is supposed to go through LOV, we
3171 assume lov checked invalid values for us.
3172 The only recognised values so far are evict_by_nid and mds_conn.
3173 Even if something bad goes through, we'd get a -EINVAL from OST
3176 req = ptlrpc_request_alloc(imp, KEY_IS(KEY_GRANT_SHRINK) ?
3177 &RQF_OST_SET_GRANT_INFO :
3182 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_KEY,
3183 RCL_CLIENT, keylen);
3184 if (!KEY_IS(KEY_GRANT_SHRINK))
3185 req_capsule_set_size(&req->rq_pill, &RMF_SETINFO_VAL,
3186 RCL_CLIENT, vallen);
3187 rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_SET_INFO);
3189 ptlrpc_request_free(req);
3193 tmp = req_capsule_client_get(&req->rq_pill, &RMF_SETINFO_KEY);
3194 memcpy(tmp, key, keylen);
3195 tmp = req_capsule_client_get(&req->rq_pill, KEY_IS(KEY_GRANT_SHRINK) ?
3198 memcpy(tmp, val, vallen);
3200 if (KEY_IS(KEY_GRANT_SHRINK)) {
3201 struct osc_grant_args *aa;
3204 CLASSERT(sizeof(*aa) <= sizeof(req->rq_async_args));
3205 aa = ptlrpc_req_async_args(req);
3208 ptlrpc_req_finished(req);
3211 *oa = ((struct ost_body *)val)->oa;
3213 req->rq_interpret_reply = osc_shrink_grant_interpret;
3216 ptlrpc_request_set_replen(req);
3217 if (!KEY_IS(KEY_GRANT_SHRINK)) {
3218 LASSERT(set != NULL);
3219 ptlrpc_set_add_req(set, req);
3220 ptlrpc_check_set(NULL, set);
3222 ptlrpcd_add_req(req, PDL_POLICY_ROUND, -1);
3228 static int osc_llog_init(struct obd_device *obd, struct obd_llog_group *olg,
3229 struct obd_device *disk_obd, int *index)
3231 /* this code is not supposed to be used with LOD/OSP
3232 * to be removed soon */
3237 static int osc_llog_finish(struct obd_device *obd, int count)
3239 struct llog_ctxt *ctxt;
3243 ctxt = llog_get_context(obd, LLOG_MDS_OST_ORIG_CTXT);
3245 llog_cat_close(NULL, ctxt->loc_handle);
3246 llog_cleanup(NULL, ctxt);
3249 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
3251 llog_cleanup(NULL, ctxt);
3255 static int osc_reconnect(const struct lu_env *env,
3256 struct obd_export *exp, struct obd_device *obd,
3257 struct obd_uuid *cluuid,
3258 struct obd_connect_data *data,
3261 struct client_obd *cli = &obd->u.cli;
3263 if (data != NULL && (data->ocd_connect_flags & OBD_CONNECT_GRANT)) {
3266 client_obd_list_lock(&cli->cl_loi_list_lock);
3267 data->ocd_grant = (cli->cl_avail_grant + cli->cl_dirty) ?:
3268 2 * cli_brw_size(obd);
3269 lost_grant = cli->cl_lost_grant;
3270 cli->cl_lost_grant = 0;
3271 client_obd_list_unlock(&cli->cl_loi_list_lock);
3273 CDEBUG(D_RPCTRACE, "ocd_connect_flags: "LPX64" ocd_version: %d"
3274 " ocd_grant: %d, lost: %ld.\n", data->ocd_connect_flags,
3275 data->ocd_version, data->ocd_grant, lost_grant);
3281 static int osc_disconnect(struct obd_export *exp)
3283 struct obd_device *obd = class_exp2obd(exp);
3284 struct llog_ctxt *ctxt;
3287 ctxt = llog_get_context(obd, LLOG_SIZE_REPL_CTXT);
3289 if (obd->u.cli.cl_conn_count == 1) {
3290 /* Flush any remaining cancel messages out to the
3292 llog_sync(ctxt, exp, 0);
3294 llog_ctxt_put(ctxt);
3296 CDEBUG(D_HA, "No LLOG_SIZE_REPL_CTXT found in obd %p\n",
3300 rc = client_disconnect_export(exp);
3302 * Initially we put del_shrink_grant before disconnect_export, but it
3303 * causes the following problem if setup (connect) and cleanup
3304 * (disconnect) are tangled together.
3305 * connect p1 disconnect p2
3306 * ptlrpc_connect_import
3307 * ............... class_manual_cleanup
3310 * ptlrpc_connect_interrupt
3312 * add this client to shrink list
3314 * Bang! pinger trigger the shrink.
3315 * So the osc should be disconnected from the shrink list, after we
3316 * are sure the import has been destroyed. BUG18662
3318 if (obd->u.cli.cl_import == NULL)
3319 osc_del_shrink_grant(&obd->u.cli);
3323 static int osc_import_event(struct obd_device *obd,
3324 struct obd_import *imp,
3325 enum obd_import_event event)
3327 struct client_obd *cli;
3331 LASSERT(imp->imp_obd == obd);
3334 case IMP_EVENT_DISCON: {
3336 client_obd_list_lock(&cli->cl_loi_list_lock);
3337 cli->cl_avail_grant = 0;
3338 cli->cl_lost_grant = 0;
3339 client_obd_list_unlock(&cli->cl_loi_list_lock);
3342 case IMP_EVENT_INACTIVE: {
3343 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_INACTIVE, NULL);
3346 case IMP_EVENT_INVALIDATE: {
3347 struct ldlm_namespace *ns = obd->obd_namespace;
3351 env = cl_env_get(&refcheck);
3355 /* all pages go to failing rpcs due to the invalid
3357 osc_io_unplug(env, cli, NULL, PDL_POLICY_ROUND);
3359 ldlm_namespace_cleanup(ns, LDLM_FL_LOCAL_ONLY);
3360 cl_env_put(env, &refcheck);
3365 case IMP_EVENT_ACTIVE: {
3366 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVE, NULL);
3369 case IMP_EVENT_OCD: {
3370 struct obd_connect_data *ocd = &imp->imp_connect_data;
3372 if (ocd->ocd_connect_flags & OBD_CONNECT_GRANT)
3373 osc_init_grant(&obd->u.cli, ocd);
3376 if (ocd->ocd_connect_flags & OBD_CONNECT_REQPORTAL)
3377 imp->imp_client->cli_request_portal =OST_REQUEST_PORTAL;
3379 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_OCD, NULL);
3382 case IMP_EVENT_DEACTIVATE: {
3383 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_DEACTIVATE, NULL);
3386 case IMP_EVENT_ACTIVATE: {
3387 rc = obd_notify_observer(obd, obd, OBD_NOTIFY_ACTIVATE, NULL);
3391 CERROR("Unknown import event %d\n", event);
3398 * Determine whether the lock can be canceled before replaying the lock
3399 * during recovery, see bug16774 for detailed information.
3401 * \retval zero the lock can't be canceled
3402 * \retval other ok to cancel
3404 static int osc_cancel_for_recovery(struct ldlm_lock *lock)
3406 check_res_locked(lock->l_resource);
3409 * Cancel all unused extent lock in granted mode LCK_PR or LCK_CR.
3411 * XXX as a future improvement, we can also cancel unused write lock
3412 * if it doesn't have dirty data and active mmaps.
3414 if (lock->l_resource->lr_type == LDLM_EXTENT &&
3415 (lock->l_granted_mode == LCK_PR ||
3416 lock->l_granted_mode == LCK_CR) &&
3417 (osc_dlm_lock_pageref(lock) == 0))
3423 static int brw_queue_work(const struct lu_env *env, void *data)
3425 struct client_obd *cli = data;
3427 CDEBUG(D_CACHE, "Run writeback work for client obd %p.\n", cli);
3429 osc_io_unplug(env, cli, NULL, PDL_POLICY_SAME);
3433 int osc_setup(struct obd_device *obd, struct lustre_cfg *lcfg)
3435 struct lprocfs_static_vars lvars = { 0 };
3436 struct client_obd *cli = &obd->u.cli;
3441 rc = ptlrpcd_addref();
3445 rc = client_obd_setup(obd, lcfg);
3447 GOTO(out_ptlrpcd, rc);
3449 handler = ptlrpcd_alloc_work(cli->cl_import, brw_queue_work, cli);
3450 if (IS_ERR(handler))
3451 GOTO(out_client_setup, rc = PTR_ERR(handler));
3452 cli->cl_writeback_work = handler;
3454 rc = osc_quota_setup(obd);
3456 GOTO(out_ptlrpcd_work, rc);
3458 cli->cl_grant_shrink_interval = GRANT_SHRINK_INTERVAL;
3459 lprocfs_osc_init_vars(&lvars);
3460 if (lprocfs_obd_setup(obd, lvars.obd_vars) == 0) {
3461 lproc_osc_attach_seqstat(obd);
3462 sptlrpc_lprocfs_cliobd_attach(obd);
3463 ptlrpc_lprocfs_register_obd(obd);
3466 /* We need to allocate a few requests more, because
3467 * brw_interpret tries to create new requests before freeing
3468 * previous ones, Ideally we want to have 2x max_rpcs_in_flight
3469 * reserved, but I'm afraid that might be too much wasted RAM
3470 * in fact, so 2 is just my guess and still should work. */
3471 cli->cl_import->imp_rq_pool =
3472 ptlrpc_init_rq_pool(cli->cl_max_rpcs_in_flight + 2,
3474 ptlrpc_add_rqs_to_pool);
3476 CFS_INIT_LIST_HEAD(&cli->cl_grant_shrink_list);
3477 ns_register_cancel(obd->obd_namespace, osc_cancel_for_recovery);
3481 ptlrpcd_destroy_work(handler);
3483 client_obd_cleanup(obd);
3489 static int osc_precleanup(struct obd_device *obd, enum obd_cleanup_stage stage)
3495 case OBD_CLEANUP_EARLY: {
3496 struct obd_import *imp;
3497 imp = obd->u.cli.cl_import;
3498 CDEBUG(D_HA, "Deactivating import %s\n", obd->obd_name);
3499 /* ptlrpc_abort_inflight to stop an mds_lov_synchronize */
3500 ptlrpc_deactivate_import(imp);
3501 spin_lock(&imp->imp_lock);
3502 imp->imp_pingable = 0;
3503 spin_unlock(&imp->imp_lock);
3506 case OBD_CLEANUP_EXPORTS: {
3507 struct client_obd *cli = &obd->u.cli;
3509 * for echo client, export may be on zombie list, wait for
3510 * zombie thread to cull it, because cli.cl_import will be
3511 * cleared in client_disconnect_export():
3512 * class_export_destroy() -> obd_cleanup() ->
3513 * echo_device_free() -> echo_client_cleanup() ->
3514 * obd_disconnect() -> osc_disconnect() ->
3515 * client_disconnect_export()
3517 obd_zombie_barrier();
3518 if (cli->cl_writeback_work) {
3519 ptlrpcd_destroy_work(cli->cl_writeback_work);
3520 cli->cl_writeback_work = NULL;
3522 obd_cleanup_client_import(obd);
3523 ptlrpc_lprocfs_unregister_obd(obd);
3524 lprocfs_obd_cleanup(obd);
3525 rc = obd_llog_finish(obd, 0);
3527 CERROR("failed to cleanup llogging subsystems\n");
3534 int osc_cleanup(struct obd_device *obd)
3536 struct client_obd *cli = &obd->u.cli;
3542 if (cli->cl_cache != NULL) {
3543 LASSERT(cfs_atomic_read(&cli->cl_cache->ccc_users) > 0);
3544 spin_lock(&cli->cl_cache->ccc_lru_lock);
3545 cfs_list_del_init(&cli->cl_lru_osc);
3546 spin_unlock(&cli->cl_cache->ccc_lru_lock);
3547 cli->cl_lru_left = NULL;
3548 cfs_atomic_dec(&cli->cl_cache->ccc_users);
3549 cli->cl_cache = NULL;
3552 /* free memory of osc quota cache */
3553 osc_quota_cleanup(obd);
3555 rc = client_obd_cleanup(obd);
3561 int osc_process_config_base(struct obd_device *obd, struct lustre_cfg *lcfg)
3563 struct lprocfs_static_vars lvars = { 0 };
3566 lprocfs_osc_init_vars(&lvars);
3568 switch (lcfg->lcfg_command) {
3570 rc = class_process_proc_param(PARAM_OSC, lvars.obd_vars,
3580 static int osc_process_config(struct obd_device *obd, obd_count len, void *buf)
3582 return osc_process_config_base(obd, buf);
3585 struct obd_ops osc_obd_ops = {
3586 .o_owner = THIS_MODULE,
3587 .o_setup = osc_setup,
3588 .o_precleanup = osc_precleanup,
3589 .o_cleanup = osc_cleanup,
3590 .o_add_conn = client_import_add_conn,
3591 .o_del_conn = client_import_del_conn,
3592 .o_connect = client_connect_import,
3593 .o_reconnect = osc_reconnect,
3594 .o_disconnect = osc_disconnect,
3595 .o_statfs = osc_statfs,
3596 .o_statfs_async = osc_statfs_async,
3597 .o_packmd = osc_packmd,
3598 .o_unpackmd = osc_unpackmd,
3599 .o_create = osc_create,
3600 .o_destroy = osc_destroy,
3601 .o_getattr = osc_getattr,
3602 .o_getattr_async = osc_getattr_async,
3603 .o_setattr = osc_setattr,
3604 .o_setattr_async = osc_setattr_async,
3606 .o_punch = osc_punch,
3608 .o_enqueue = osc_enqueue,
3609 .o_change_cbdata = osc_change_cbdata,
3610 .o_find_cbdata = osc_find_cbdata,
3611 .o_cancel = osc_cancel,
3612 .o_cancel_unused = osc_cancel_unused,
3613 .o_iocontrol = osc_iocontrol,
3614 .o_get_info = osc_get_info,
3615 .o_set_info_async = osc_set_info_async,
3616 .o_import_event = osc_import_event,
3617 .o_llog_init = osc_llog_init,
3618 .o_llog_finish = osc_llog_finish,
3619 .o_process_config = osc_process_config,
3620 .o_quotactl = osc_quotactl,
3621 .o_quotacheck = osc_quotacheck,
3624 extern struct lu_kmem_descr osc_caches[];
3625 extern spinlock_t osc_ast_guard;
3626 extern struct lock_class_key osc_ast_guard_class;
3628 int __init osc_init(void)
3630 struct lprocfs_static_vars lvars = { 0 };
3634 /* print an address of _any_ initialized kernel symbol from this
3635 * module, to allow debugging with gdb that doesn't support data
3636 * symbols from modules.*/
3637 CDEBUG(D_INFO, "Lustre OSC module (%p).\n", &osc_caches);
3639 rc = lu_kmem_init(osc_caches);
3641 lprocfs_osc_init_vars(&lvars);
3643 rc = class_register_type(&osc_obd_ops, NULL, lvars.module_vars,
3644 LUSTRE_OSC_NAME, &osc_device_type);
3646 lu_kmem_fini(osc_caches);
3650 spin_lock_init(&osc_ast_guard);
3651 lockdep_set_class(&osc_ast_guard, &osc_ast_guard_class);
3657 static void /*__exit*/ osc_exit(void)
3659 class_unregister_type(LUSTRE_OSC_NAME);
3660 lu_kmem_fini(osc_caches);
3663 MODULE_AUTHOR("Sun Microsystems, Inc. <http://www.lustre.org/>");
3664 MODULE_DESCRIPTION("Lustre Object Storage Client (OSC)");
3665 MODULE_LICENSE("GPL");
3667 cfs_module(osc, LUSTRE_VERSION_STRING, osc_init, osc_exit);
git://git.whamcloud.com / fs / lustre-release.git / blob